18705022616 has 32 divisors (see below), whose sum is σ = 42439969440. Its totient is φ = 7544882688.

The previous prime is 18705022603. The next prime is 18705022643. The reversal of 18705022616 is 61622050781.

It is a super-3 number, since 3×18705022616³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18705022616.

It is a congruent 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, 9823115 + ... + 9825018.

It is an arithmetic number, because the mean of its divisors is an integer number (1326249045).

Almost surely, 2^18705022616 is an apocalyptic number.

It is an amenable number.

18705022616 is an abundant number, since it is smaller than the sum of its proper divisors (23734946824).

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

18705022616 is a wasteful number, since it uses less digits than its factorization.

18705022616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19648163 (or 19648159 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 18705022616 in words is "eighteen billion, seven hundred five million, twenty-two thousand, six hundred sixteen".