2186867180 has 12 divisors (see below), whose sum is σ = 4592421120. Its totient is φ = 874746864.

The previous prime is 2186867173. The next prime is 2186867213. The reversal of 2186867180 is 817686812.

It is a happy number.

It is a super-2 number, since 2×2186867180² = 9564776125922304800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54671660 + ... + 54671699.

It is an arithmetic number, because the mean of its divisors is an integer number (382701760).

Almost surely, 2^2186867180 is an apocalyptic number.

2186867180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2186867180 is an abundant number, since it is smaller than the sum of its proper divisors (2405553940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2186867180 is a wasteful number, since it uses less digits than its factorization.

2186867180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109343368 (or 109343366 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 2186867180 is about 46763.9517149695. The cubic root of 2186867180 is about 1297.9983357093.

The spelling of 2186867180 in words is "two billion, one hundred eighty-six million, eight hundred sixty-seven thousand, one hundred eighty".