18589377912 has 64 divisors (see below), whose sum is σ = 54825830400. Its totient is φ = 5139918720.

The previous prime is 18589377907. The next prime is 18589377931. The reversal of 18589377912 is 21977398581.

It is a congruent 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, 1779487 + ... + 1789902.

It is an arithmetic number, because the mean of its divisors is an integer number (856653600).

Almost surely, 2^18589377912 is an apocalyptic number.

18589377912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18589377912 is an abundant number, since it is smaller than the sum of its proper divisors (36236452488).

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

18589377912 is a wasteful number, since it uses less digits than its factorization.

18589377912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569436 (or 3569432 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 60.

The spelling of 18589377912 in words is "eighteen billion, five hundred eighty-nine million, three hundred seventy-seven thousand, nine hundred twelve".