18377485500 has 96 divisors (see below), whose sum is σ = 58380311808. Its totient is φ = 4455144000.

The previous prime is 18377485499. The next prime is 18377485517. The reversal of 18377485500 is 558477381.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18377485500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 540394 + ... + 573393.

It is an arithmetic number, because the mean of its divisors is an integer number (608128248).

Almost surely, 2^18377485500 is an apocalyptic number.

18377485500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18377485500 is an abundant number, since it is smaller than the sum of its proper divisors (40002826308).

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

18377485500 is a wasteful number, since it uses less digits than its factorization.

18377485500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113820 (or 1113808 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 18377485500 in words is "eighteen billion, three hundred seventy-seven million, four hundred eighty-five thousand, five hundred".