186 (number)

186 (one hundred [and] eighty-six) is the natural number following 185 and preceding 187.

In mathematics

• 186 is an even number
• 186 is an abundant number, as 198 is greater than 186
• 186 is a composite number
• There is no integer with exactly 186 coprimes less than it. 186 is a nontotient, nor is it ever the difference between an integer and the total of coprimes below it, thus also a noncototient
• 186 is an odious number
• 186 is a sphenic number, so the Möbius function returns -1 (and the Mertens function returns -4)
• 186 is a square-free number
• 186 is a 14-gonal number^[1] and a 63-gonal number^[2]
• 186 factors: 2 × 3 × 31
• 186 divisors: 1, 2, 3, 6, 31, 62, 93, 186
• There are 186 degree-11 irreducible polynomials over a Galois field with 2 elements (sequence A001037 in the OEIS)

In astronomy

• 186 Celuta is a large S-type asteroid Main belt asteroid
• POX 186 is a small galaxy still forming

In geography

• Abernethy No. 186, Saskatchewan is a rural municipality in Saskatchewan, Canada

In the military

• RFA Fort Rosalie (A186) was a Royal Fleet Auxiliary armament stores carrier following World War II
• USNS Bessemer (T-AG-186) was a United States Navy victory ship during World War II
• USS Clemson (DD-186) was a United States Navy destroyer during World War II
• USS Dawn (IX-186) was a United States Navy tanker ship during World War II
• USS Habersham (AK-186) was a United States Navy Alamosa cargo-class ship during World War II
• USS Platte (AO-186) was a United States Navy Cimarron-class ship from 1981-1999
• USS Stingray (SS-186) was a United States Navy Salmon-class submarine during World War II
• USS Swearer (DE-186) was a United States Navy Cannon-class destroyer escort during World War II

In sports

• The light heavyweight division in mixed martial arts refers to competitors weighing between 186 and 205 pounds

In transportation

• The 186 is a legendary 6-cylinder Holden engine (L6), that was first used in the Holden HR series. It has a piston displacement of 186 cubic inches (3048cc).
• London Buses route 186
• Cosmos 186 and Cosmos 188 incorporated a Soyuz programme descent module for landing scientific instruments and test objects

In other fields

186 is also:

• The year AD 186 or 186 BC
• The atomic number of an element temporarily called Unocthexium
• Minuscule 186 is a Greek minuscule manuscript of the New Testament, on parchment

See also

• List of highways numbered 186
• United Nations Security Council Resolution 186
• Pennsylvania House of Representatives, District 186
• United States Supreme Court cases, Volume 186

References

External links

Wikimedia Commons has media related to 186 (number).

• Number Facts and Trivia: 186
• The Number 186
• The Positive Integer 186
• Prime curiosities: 186
• Number Gossip: 186