18957599016 has 32 divisors (see below), whose sum is σ = 47423586240. Its totient is φ = 6315254528.

The previous prime is 18957598997. The next prime is 18957599021. The reversal of 18957599016 is 61099575981.

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, 207201 + ... + 284336.

It is an arithmetic number, because the mean of its divisors is an integer number (1481987070).

Almost surely, 2^18957599016 is an apocalyptic number.

It is an amenable number.

18957599016 is an abundant number, since it is smaller than the sum of its proper divisors (28465987224).

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

18957599016 is a wasteful number, since it uses less digits than its factorization.

18957599016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493153 (or 493149 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 60.

The spelling of 18957599016 in words is "eighteen billion, nine hundred fifty-seven million, five hundred ninety-nine thousand, sixteen".