18391488960 has 112 divisors (see below), whose sum is σ = 62884787616. Its totient is φ = 4527132672.

The previous prime is 18391488931. The next prime is 18391488989. The reversal of 18391488960 is 6988419381.

It is an interprime number because it is at equal distance from previous prime (18391488931) and next prime (18391488989).

It is a self number, because there is not a number n which added to its sum of digits gives 18391488960.

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, 724359 + ... + 749318.

It is an arithmetic number, because the mean of its divisors is an integer number (561471318).

Almost surely, 2^18391488960 is an apocalyptic number.

18391488960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18391488960 is an abundant number, since it is smaller than the sum of its proper divisors (44493298656).

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

18391488960 is a wasteful number, since it uses less digits than its factorization.

18391488960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473710 (or 1473700 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The spelling of 18391488960 in words is "eighteen billion, three hundred ninety-one million, four hundred eighty-eight thousand, nine hundred sixty".