18700693344 has 48 divisors (see below), whose sum is σ = 54543691440. Its totient is φ = 6233564160.

The previous prime is 18700693339. The next prime is 18700693351. The reversal of 18700693344 is 44339600781.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 18700693344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10821297 + ... + 10823024.

It is an arithmetic number, because the mean of its divisors is an integer number (1136326905).

Almost surely, 2^18700693344 is an apocalyptic number.

It is an amenable number.

18700693344 is an abundant number, since it is smaller than the sum of its proper divisors (35842998096).

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

18700693344 is a wasteful number, since it uses less digits than its factorization.

18700693344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21644340 (or 21644326 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 18700693344 in words is "eighteen billion, seven hundred million, six hundred ninety-three thousand, three hundred forty-four".