18389172112332 has 48 divisors (see below), whose sum is σ = 49038033273600. Its totient is φ = 5254023356352.

The previous prime is 18389172112301. The next prime is 18389172112357. The reversal of 18389172112332 is 23321127198381.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22492503 + ... + 23295729.

It is an arithmetic number, because the mean of its divisors is an integer number (1021625693200).

Almost surely, 2^{18389172112332} is an apocalyptic number.

18389172112332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18389172112332 is an abundant number, since it is smaller than the sum of its proper divisors (30648861161268).

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

18389172112332 is a wasteful number, since it uses less digits than its factorization.

18389172112332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075790 (or 1075788 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The spelling of 18389172112332 in words is "eighteen trillion, three hundred eighty-nine billion, one hundred seventy-two million, one hundred twelve thousand, three hundred thirty-two".