18846612416 has 28 divisors (see below), whose sum is σ = 38268490392. Its totient is φ = 9204158208.

The previous prime is 18846612401. The next prime is 18846612427. The reversal of 18846612416 is 61421664881.

It is a congruent number.

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, 3421415 + ... + 3426918.

Almost surely, 2^18846612416 is an apocalyptic number.

18846612416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18846612416 is an abundant number, since it is smaller than the sum of its proper divisors (19421877976).

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

18846612416 is an equidigital number, since it uses as much as digits as its factorization.

18846612416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848388 (or 6848378 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The spelling of 18846612416 in words is "eighteen billion, eight hundred forty-six million, six hundred twelve thousand, four hundred sixteen".