18973375100 has 36 divisors (see below), whose sum is σ = 41178874800. Its totient is φ = 7588124160.

The previous prime is 18973375063. The next prime is 18973375133. The reversal of 18973375100 is 157337981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 849881 + ... + 871919.

Almost surely, 2^18973375100 is an apocalyptic number.

18973375100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18973375100 is an abundant number, since it is smaller than the sum of its proper divisors (22205499700).

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

18973375100 is a wasteful number, since it uses less digits than its factorization.

18973375100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30662 (or 30655 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 18973375100 in words is "eighteen billion, nine hundred seventy-three million, three hundred seventy-five thousand, one hundred".