18972385372 has 12 divisors (see below), whose sum is σ = 33232740520. Its totient is φ = 9477316656.

The previous prime is 18972385351. The next prime is 18972385379. The reversal of 18972385372 is 27358327981.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18972385379) by changing a digit.

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, 2214198 + ... + 2222749.

Almost surely, 2^18972385372 is an apocalyptic number.

It is an amenable number.

18972385372 is a deficient number, since it is larger than the sum of its proper divisors (14260355148).

18972385372 is a wasteful number, since it uses less digits than its factorization.

18972385372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438020 (or 4438018 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The spelling of 18972385372 in words is "eighteen billion, nine hundred seventy-two million, three hundred eighty-five thousand, three hundred seventy-two".