18979134372 has 36 divisors (see below), whose sum is σ = 52336401936. Its totient is φ = 5751252720.

The previous prime is 18979134359. The next prime is 18979134431. The reversal of 18979134372 is 27343197981.

18979134372 is a `hidden beast` number, since 189 + 7 + 91 + 3 + 4 + 372 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 23963158 + ... + 23963949.

Almost surely, 2^18979134372 is an apocalyptic number.

18979134372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18979134372 is an abundant number, since it is smaller than the sum of its proper divisors (33357267564).

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

18979134372 is a wasteful number, since it uses less digits than its factorization.

18979134372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47927128 (or 47927123 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

It can be divided in two parts, 18979 and 134372, that added together give a palindrome (153351).

The spelling of 18979134372 in words is "eighteen billion, nine hundred seventy-nine million, one hundred thirty-four thousand, three hundred seventy-two".