18099801924 has 24 divisors (see below), whose sum is σ = 42377018880. Its totient is φ = 6012674784.

The previous prime is 18099801919. The next prime is 18099801959. The reversal of 18099801924 is 42910899081.

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, 2570404 + ... + 2577435.

It is an arithmetic number, because the mean of its divisors is an integer number (1765709120).

Almost surely, 2^18099801924 is an apocalyptic number.

It is an amenable number.

18099801924 is an abundant number, since it is smaller than the sum of its proper divisors (24277216956).

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

18099801924 is a wasteful number, since it uses less digits than its factorization.

18099801924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148139 (or 5148137 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 51.

The spelling of 18099801924 in words is "eighteen billion, ninety-nine million, eight hundred one thousand, nine hundred twenty-four".