18306396924 has 12 divisors (see below), whose sum is σ = 42714926184. Its totient is φ = 6102132304.

The previous prime is 18306396919. The next prime is 18306396937. The reversal of 18306396924 is 42969360381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×18306396924³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762766527 + ... + 762766550.

It is an arithmetic number, because the mean of its divisors is an integer number (3559577182).

Almost surely, 2^18306396924 is an apocalyptic number.

It is an amenable number.

18306396924 is an abundant number, since it is smaller than the sum of its proper divisors (24408529260).

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

18306396924 is a wasteful number, since it uses less digits than its factorization.

18306396924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525533084 (or 1525533082 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 18306396924 in words is "eighteen billion, three hundred six million, three hundred ninety-six thousand, nine hundred twenty-four".