187372856164 has 12 divisors (see below), whose sum is σ = 353125767484. Its totient is φ = 86479779744.

The previous prime is 187372856147. The next prime is 187372856191. The reversal of 187372856164 is 461658273781.

It can be written as a sum of positive squares in 2 ways, for example, as 123847686400 + 63525169764 = 351920^2 + 252042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 187372856099 and 187372856108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801662027 + ... + 1801662130.

Almost surely, 2^187372856164 is an apocalyptic number.

It is an amenable number.

187372856164 is a deficient number, since it is larger than the sum of its proper divisors (165752911320).

187372856164 is a wasteful number, since it uses less digits than its factorization.

187372856164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603324174 (or 3603324172 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 58.

The spelling of 187372856164 in words is "one hundred eighty-seven billion, three hundred seventy-two million, eight hundred fifty-six thousand, one hundred sixty-four".