18871712592 has 40 divisors (see below), whose sum is σ = 48817631424. Its totient is φ = 6282092544.

The previous prime is 18871712581. The next prime is 18871712611. The reversal of 18871712592 is 29521717881.

It is a super-2 number, since 2×18871712592² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228913 + ... + 300240.

Almost surely, 2^18871712592 is an apocalyptic number.

18871712592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18871712592 is an abundant number, since it is smaller than the sum of its proper divisors (29945918832).

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

18871712592 is a wasteful number, since it uses less digits than its factorization.

18871712592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529907 (or 529901 counting only the distinct ones).

The product of its digits is 564480, while the sum is 51.

The spelling of 18871712592 in words is "eighteen billion, eight hundred seventy-one million, seven hundred twelve thousand, five hundred ninety-two".