2187979000 has 32 divisors (see below), whose sum is σ = 5119873200. Its totient is φ = 875191200.

The previous prime is 2187978973. The next prime is 2187979051. The reversal of 2187979000 is 9797812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092990 + ... + 1094989.

Almost surely, 2^2187979000 is an apocalyptic number.

2187979000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187979000 is an abundant number, since it is smaller than the sum of its proper divisors (2931894200).

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

2187979000 is a wasteful number, since it uses less digits than its factorization.

2187979000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188000 (or 2187986 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 2187979000 is about 46775.8377797769. The cubic root of 2187979000 is about 1298.2182692020.

The spelling of 2187979000 in words is "two billion, one hundred eighty-seven million, nine hundred seventy-nine thousand".