18239328888 has 64 divisors (see below), whose sum is σ = 51348280320. Its totient is φ = 5348774400.

The previous prime is 18239328871. The next prime is 18239328967. The reversal of 18239328888 is 88882393281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106145 + ... + 1122512.

It is an arithmetic number, because the mean of its divisors is an integer number (802316880).

Almost surely, 2^18239328888 is an apocalyptic number.

It is an amenable number.

18239328888 is an abundant number, since it is smaller than the sum of its proper divisors (33108951432).

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

18239328888 is a wasteful number, since it uses less digits than its factorization.

18239328888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228708 (or 2228704 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 60.

The spelling of 18239328888 in words is "eighteen billion, two hundred thirty-nine million, three hundred twenty-eight thousand, eight hundred eighty-eight".