2180

2180 is a natural number that follows 2179 and precedes 2181. In English, it is read as two thousand one hundred eighty. The number is even and composite.

Its prime factorization is 2^2 × 5 × 109, yielding twelve positive divisors: 1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, and 2180. In Roman numerals, 2180 is written as MMCLXXX.

As a year, 2180 CE would be a leap year under the Gregorian calendar, containing 366 days. This means February would have 29 days if the Gregorian system is in use.

In cultural and speculative contexts, 2180 is sometimes employed as a distant-future setting in science fiction and futurist discourse to explore advanced technology, space exploration, or societal change. Its use generally signals a time frame well beyond the present day.

Overall, 2180 is primarily noted for its mathematical properties as a composite even number and for its role as a future-year designation in calendar systems and cultural imagination.