18743744768 has 144 divisors (see below), whose sum is σ = 44707676160. Its totient is φ = 7673702400.

The previous prime is 18743744759. The next prime is 18743744779. The reversal of 18743744768 is 86744734781.

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, 4386473 + ... + 4390743.

Almost surely, 2^18743744768 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 18743744768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22353838080).

18743744768 is an abundant number, since it is smaller than the sum of its proper divisors (25963931392).

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

18743744768 is an equidigital number, since it uses as much as digits as its factorization.

18743744768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404 (or 4390 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 59.

The spelling of 18743744768 in words is "eighteen billion, seven hundred forty-three million, seven hundred forty-four thousand, seven hundred sixty-eight".