18733264928 has 96 divisors (see below), whose sum is σ = 44421632640. Its totient is φ = 7596840960.

The previous prime is 18733264897. The next prime is 18733264951. The reversal of 18733264928 is 82946233781.

It is a self number, because there is not a number n which added to its sum of digits gives 18733264928.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4394318 + ... + 4398578.

It is an arithmetic number, because the mean of its divisors is an integer number (462725340).

Almost surely, 2^18733264928 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 18733264928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22210816320).

18733264928 is an abundant number, since it is smaller than the sum of its proper divisors (25688367712).

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

18733264928 is a wasteful number, since it uses less digits than its factorization.

18733264928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330 (or 5322 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The spelling of 18733264928 in words is "eighteen billion, seven hundred thirty-three million, two hundred sixty-four thousand, nine hundred twenty-eight".