18457113599 has 4 divisors (see below), whose sum is σ = 18639857400. Its totient is φ = 18274369800.

The previous prime is 18457113527. The next prime is 18457113617. The reversal of 18457113599 is 99531175481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18457113599 - 2¹⁶ = 18457048063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18457113599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18457118599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91371749 + ... + 91371950.

It is an arithmetic number, because the mean of its divisors is an integer number (4659964350).

Almost surely, 2^18457113599 is an apocalyptic number.

18457113599 is a deficient number, since it is larger than the sum of its proper divisors (182743801).

18457113599 is a wasteful number, since it uses less digits than its factorization.

18457113599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182743800.

The product of its digits is 1360800, while the sum is 53.

The spelling of 18457113599 in words is "eighteen billion, four hundred fifty-seven million, one hundred thirteen thousand, five hundred ninety-nine".