2186976980 has 18 divisors (see below), whose sum is σ = 4593090894. Its totient is φ = 874707136.

The previous prime is 2186976973. The next prime is 2186976983. The reversal of 2186976980 is 896796812.

It can be written as a sum of positive squares in 3 ways, for example, as 1109955856 + 1077021124 = 33316^2 + 32818^2 .

It is a super-2 number, since 2×2186976980² = 9565736622099840800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186976983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203912 + ... + 214368.

Almost surely, 2^2186976980 is an apocalyptic number.

2186976980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2186976980 is an abundant number, since it is smaller than the sum of its proper divisors (2406113914).

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

2186976980 is an frugal number, since it uses more digits than its factorization.

2186976980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20923 (or 10464 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 2186976980 is about 46765.1256814306. The cubic root of 2186976980 is about 1298.0200589966.

The spelling of 2186976980 in words is "two billion, one hundred eighty-six million, nine hundred seventy-six thousand, nine hundred eighty".