185486868972 has 48 divisors (see below), whose sum is σ = 506201987200. Its totient is φ = 58574800080.

The previous prime is 185486868937. The next prime is 185486868989. The reversal of 185486868972 is 279868684581.

185486868972 is a `hidden beast` number, since 1 + 8 + 548 + 6 + 8 + 6 + 8 + 9 + 72 = 666.

185486868972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×185486868972² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 185486868972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45194554 + ... + 45198657.

Almost surely, 2^185486868972 is an apocalyptic number.

185486868972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

185486868972 is an abundant number, since it is smaller than the sum of its proper divisors (320715118228).

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

185486868972 is a wasteful number, since it uses less digits than its factorization.

185486868972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90393243 (or 90393235 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 72.

The spelling of 185486868972 in words is "one hundred eighty-five billion, four hundred eighty-six million, eight hundred sixty-eight thousand, nine hundred seventy-two".