18736469392 has 80 divisors (see below), whose sum is σ = 40323312000. Its totient is φ = 8393628672.

The previous prime is 18736469377. The next prime is 18736469431. The reversal of 18736469392 is 29396463781.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 607234 + ... + 637342.

It is an arithmetic number, because the mean of its divisors is an integer number (504041400).

Almost surely, 2^18736469392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18736469392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20161656000).

18736469392 is an abundant number, since it is smaller than the sum of its proper divisors (21586842608).

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

18736469392 is a wasteful number, since it uses less digits than its factorization.

18736469392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30248 (or 30242 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 58.

The spelling of 18736469392 in words is "eighteen billion, seven hundred thirty-six million, four hundred sixty-nine thousand, three hundred ninety-two".