18039990084 has 96 divisors (see below), whose sum is σ = 43818700800. Its totient is φ = 5770396800.

The previous prime is 18039990077. The next prime is 18039990107. The reversal of 18039990084 is 48009993081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36741079 + ... + 36741569.

It is an arithmetic number, because the mean of its divisors is an integer number (456444800).

Almost surely, 2^18039990084 is an apocalyptic number.

It is an amenable number.

18039990084 is an abundant number, since it is smaller than the sum of its proper divisors (25778710716).

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

18039990084 is a wasteful number, since it uses less digits than its factorization.

18039990084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 18039990084 in words is "eighteen billion, thirty-nine million, nine hundred ninety thousand, eighty-four".