18505887360 has 64 divisors (see below), whose sum is σ = 58987522080. Its totient is φ = 4934902784.

The previous prime is 18505887359. The next prime is 18505887373. The reversal of 18505887360 is 6378850581.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 4817322 + ... + 4821161.

Almost surely, 2^18505887360 is an apocalyptic number.

18505887360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18505887360 is an abundant number, since it is smaller than the sum of its proper divisors (40481634720).

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

18505887360 is an equidigital number, since it uses as much as digits as its factorization.

18505887360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9638505 (or 9638493 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 18505887360 in words is "eighteen billion, five hundred five million, eight hundred eighty-seven thousand, three hundred sixty".