18365234975 has 12 divisors (see below), whose sum is σ = 22828583520. Its totient is φ = 14656257600.

The previous prime is 18365234911. The next prime is 18365234977. The reversal of 18365234975 is 57943256381.

It is a happy number.

It is not a de Polignac number, because 18365234975 - 2⁶ = 18365234911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18365234977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 887831 + ... + 908280.

It is an arithmetic number, because the mean of its divisors is an integer number (1902381960).

Almost surely, 2^18365234975 is an apocalyptic number.

18365234975 is a deficient number, since it is larger than the sum of its proper divisors (4463348545).

18365234975 is a wasteful number, since it uses less digits than its factorization.

18365234975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796530 (or 1796525 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 53.

The spelling of 18365234975 in words is "eighteen billion, three hundred sixty-five million, two hundred thirty-four thousand, nine hundred seventy-five".