186520908972 has 48 divisors (see below), whose sum is σ = 437120167680. Its totient is φ = 61901905728.

The previous prime is 186520908971. The next prime is 186520909019. The reversal of 186520908972 is 279809025681.

It is a happy number.

186520908972 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 2×186520908972² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (186520908971) by changing a digit.

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, 4130854 + ... + 4175762.

It is an arithmetic number, because the mean of its divisors is an integer number (9106670160).

Almost surely, 2^186520908972 is an apocalyptic number.

186520908972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

186520908972 is an abundant number, since it is smaller than the sum of its proper divisors (250599258708).

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

186520908972 is a wasteful number, since it uses less digits than its factorization.

186520908972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46422 (or 46420 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 186520908972 in words is "one hundred eighty-six billion, five hundred twenty million, nine hundred eight thousand, nine hundred seventy-two".