18803909900 has 72 divisors (see below), whose sum is σ = 42690080160. Its totient is φ = 7175703040.

The previous prime is 18803909863. The next prime is 18803909951. The reversal of 18803909900 is 990930881.

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, 884192 + ... + 905208.

It is an arithmetic number, because the mean of its divisors is an integer number (592917780).

Almost surely, 2^18803909900 is an apocalyptic number.

18803909900 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 18803909900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21345040080).

18803909900 is an abundant number, since it is smaller than the sum of its proper divisors (23886170260).

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

18803909900 is a wasteful number, since it uses less digits than its factorization.

18803909900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21443 (or 21436 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 18803909900 in words is "eighteen billion, eight hundred three million, nine hundred nine thousand, nine hundred".