18642165852 has 96 divisors (see below), whose sum is σ = 45045504000. Its totient is φ = 5996736000.

The previous prime is 18642165833. The next prime is 18642165923. The reversal of 18642165852 is 25856124681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25927549 + ... + 25928267.

It is an arithmetic number, because the mean of its divisors is an integer number (469224000).

Almost surely, 2^18642165852 is an apocalyptic number.

18642165852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18642165852 is an abundant number, since it is smaller than the sum of its proper divisors (26403338148).

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

18642165852 is a wasteful number, since it uses less digits than its factorization.

18642165852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1265 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The spelling of 18642165852 in words is "eighteen billion, six hundred forty-two million, one hundred sixty-five thousand, eight hundred fifty-two".