2186170980 has 48 divisors (see below), whose sum is σ = 6995748480. Its totient is φ = 499696128.

The previous prime is 2186170979. The next prime is 2186171017. The reversal of 2186170980 is 890716812.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2602165 + ... + 2603004.

It is an arithmetic number, because the mean of its divisors is an integer number (145744760).

Almost surely, 2^2186170980 is an apocalyptic number.

2186170980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2186170980 is an abundant number, since it is smaller than the sum of its proper divisors (4809577500).

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

2186170980 is a wasteful number, since it uses less digits than its factorization.

2186170980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205188 (or 5205186 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 2186170980 is about 46756.5073545918. The cubic root of 2186170980 is about 1297.8605796898.

It can be divided in two parts, 2186 and 170980, that added together give a triangular number (173166 = T₅₈₈).

The spelling of 2186170980 in words is "two billion, one hundred eighty-six million, one hundred seventy thousand, nine hundred eighty".