18402912852 has 24 divisors (see below), whose sum is σ = 43037072736. Its totient is φ = 6120455328.

The previous prime is 18402912817. The next prime is 18402912877. The reversal of 18402912852 is 25821920481.

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, 1725583 + ... + 1736214.

It is an arithmetic number, because the mean of its divisors is an integer number (1793211364).

Almost surely, 2^18402912852 is an apocalyptic number.

18402912852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18402912852 is an abundant number, since it is smaller than the sum of its proper divisors (24634159884).

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

18402912852 is a wasteful number, since it uses less digits than its factorization.

18402912852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462247 (or 3462245 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 18402912852 in words is "eighteen billion, four hundred two million, nine hundred twelve thousand, eight hundred fifty-two".