18589140964 has 9 divisors (see below), whose sum is σ = 32531473891. Its totient is φ = 9294434140.

The previous prime is 18589140961. The next prime is 18589140967. The reversal of 18589140964 is 46904198581.

The square root of 18589140964 is 136342.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (18589140961) and next prime (18589140967).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18589140961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 238599 + ... + 306769.

Almost surely, 2^18589140964 is an apocalyptic number.

18589140964 is the 136342-nd square number.

It is an amenable number.

18589140964 is a deficient number, since it is larger than the sum of its proper divisors (13942332927).

18589140964 is an frugal number, since it uses more digits than its factorization.

18589140964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136346 (or 68173 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 18589140964 in words is "eighteen billion, five hundred eighty-nine million, one hundred forty thousand, nine hundred sixty-four".