18712805900 has 72 divisors (see below), whose sum is σ = 42939335040. Its totient is φ = 7066944000.

The previous prime is 18712805897. The next prime is 18712805927. The reversal of 18712805900 is 950821781.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 53486 + ... + 200714.

Almost surely, 2^18712805900 is an apocalyptic number.

18712805900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18712805900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21469667520).

18712805900 is an abundant number, since it is smaller than the sum of its proper divisors (24226529140).

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

18712805900 is a wasteful number, since it uses less digits than its factorization.

18712805900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147315 (or 147308 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The spelling of 18712805900 in words is "eighteen billion, seven hundred twelve million, eight hundred five thousand, nine hundred".