18675780900 has 72 divisors (see below), whose sum is σ = 61754589120. Its totient is φ = 4268749440.

The previous prime is 18675780889. The next prime is 18675780919. The reversal of 18675780900 is 908757681.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4444515 + ... + 4448714.

Almost surely, 2^18675780900 is an apocalyptic number.

18675780900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18675780900 is an abundant number, since it is smaller than the sum of its proper divisors (43078808220).

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

18675780900 is a wasteful number, since it uses less digits than its factorization.

18675780900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893253 (or 8893246 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 18675780900 in words is "eighteen billion, six hundred seventy-five million, seven hundred eighty thousand, nine hundred".