2185872788 has 12 divisors (see below), whose sum is σ = 4173029952. Its totient is φ = 993578520.

The previous prime is 2185872779. The next prime is 2185872817. The reversal of 2185872788 is 8872785812.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 24839420 + ... + 24839507.

It is an arithmetic number, because the mean of its divisors is an integer number (347752496).

Almost surely, 2^2185872788 is an apocalyptic number.

It is an amenable number.

2185872788 is a deficient number, since it is larger than the sum of its proper divisors (1987157164).

2185872788 is a wasteful number, since it uses less digits than its factorization.

2185872788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49678942 (or 49678940 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 56.

The square root of 2185872788 is about 46753.3184704573. The cubic root of 2185872788 is about 1297.8015679530.

The spelling of 2185872788 in words is "two billion, one hundred eighty-five million, eight hundred seventy-two thousand, seven hundred eighty-eight".