18975217888 has 24 divisors (see below), whose sum is σ = 40753593720. Its totient is φ = 8625098880.

The previous prime is 18975217883. The next prime is 18975217903. The reversal of 18975217888 is 88871257981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18975217883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26953083 + ... + 26953786.

It is an arithmetic number, because the mean of its divisors is an integer number (1698066405).

Almost surely, 2^18975217888 is an apocalyptic number.

It is an amenable number.

18975217888 is an abundant number, since it is smaller than the sum of its proper divisors (21778375832).

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

18975217888 is a wasteful number, since it uses less digits than its factorization.

18975217888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53906890 (or 53906882 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 64.

The spelling of 18975217888 in words is "eighteen billion, nine hundred seventy-five million, two hundred seventeen thousand, eight hundred eighty-eight".