18724196928 has 112 divisors (see below), whose sum is σ = 50492623424. Its totient is φ = 6122096640.

The previous prime is 18724196903. The next prime is 18724196987. The reversal of 18724196928 is 82969142781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4647651 + ... + 4651677.

Almost surely, 2^18724196928 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 18724196928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25246311712).

18724196928 is an abundant number, since it is smaller than the sum of its proper divisors (31768426496).

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

18724196928 is a wasteful number, since it uses less digits than its factorization.

18724196928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500 (or 4490 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The spelling of 18724196928 in words is "eighteen billion, seven hundred twenty-four million, one hundred ninety-six thousand, nine hundred twenty-eight".