18501058608 has 20 divisors (see below), whose sum is σ = 47794401528. Its totient is φ = 6167019520.

The previous prime is 18501058567. The next prime is 18501058627. The reversal of 18501058608 is 80685010581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18501058608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192719313 + ... + 192719408.

Almost surely, 2^18501058608 is an apocalyptic number.

It is an amenable number.

18501058608 is an abundant number, since it is smaller than the sum of its proper divisors (29293342920).

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

18501058608 is a wasteful number, since it uses less digits than its factorization.

18501058608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385438732 (or 385438726 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 42.

The spelling of 18501058608 in words is "eighteen billion, five hundred one million, fifty-eight thousand, six hundred eight".