18107999924 has 12 divisors (see below), whose sum is σ = 36215999904. Its totient is φ = 7760571384.

The previous prime is 18107999909. The next prime is 18107999953. The reversal of 18107999924 is 42999970181.

18107999924 is an admirable number.

It is a super-2 number, since 2×18107999924² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323357114 + ... + 323357169.

It is an arithmetic number, because the mean of its divisors is an integer number (3017999992).

Almost surely, 2^18107999924 is an apocalyptic number.

18107999924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18107999924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18107999924 is a wasteful number, since it uses less digits than its factorization.

18107999924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646714294 (or 646714292 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 18107999924 in words is "eighteen billion, one hundred seven million, nine hundred ninety-nine thousand, nine hundred twenty-four".