18388386084 has 24 divisors (see below), whose sum is σ = 42908675040. Its totient is φ = 6129113344.

The previous prime is 18388386013. The next prime is 18388386113. The reversal of 18388386084 is 48068388381.

It is a happy number.

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, 261652 + ... + 324404.

It is an arithmetic number, because the mean of its divisors is an integer number (1787861460).

Almost surely, 2^18388386084 is an apocalyptic number.

It is an amenable number.

18388386084 is an abundant number, since it is smaller than the sum of its proper divisors (24520288956).

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

18388386084 is a wasteful number, since it uses less digits than its factorization.

18388386084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87179 (or 87177 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 57.

The spelling of 18388386084 in words is "eighteen billion, three hundred eighty-eight million, three hundred eighty-six thousand, eighty-four".