18917074244 has 48 divisors (see below), whose sum is σ = 34053465600. Its totient is φ = 9192268800.

The previous prime is 18917074229. The next prime is 18917074271. The reversal of 18917074244 is 44247071981.

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, 6776489 + ... + 6779279.

It is an arithmetic number, because the mean of its divisors is an integer number (709447200).

Almost surely, 2^18917074244 is an apocalyptic number.

It is an amenable number.

18917074244 is a deficient number, since it is larger than the sum of its proper divisors (15136391356).

18917074244 is a wasteful number, since it uses less digits than its factorization.

18917074244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 3202 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 18917074244 in words is "eighteen billion, nine hundred seventeen million, seventy-four thousand, two hundred forty-four".