18057023937 has 6 divisors (see below), whose sum is σ = 26082367922. Its totient is φ = 12038015952.

The previous prime is 18057023923. The next prime is 18057023993. The reversal of 18057023937 is 73932075081.

It is a happy number.

18057023937 is a `hidden beast` number, since 18 + 0 + 570 + 2 + 39 + 37 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10228490496 + 7828533441 = 101136^2 + 88479^2 .

It is not a de Polignac number, because 18057023937 - 2¹¹ = 18057021889 is a prime.

It is a super-2 number, since 2×18057023937² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18057023892 and 18057023901.

It is not an unprimeable number, because it can be changed into a prime (18057033937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1003167988 + ... + 1003168005.

Almost surely, 2^18057023937 is an apocalyptic number.

It is an amenable number.

18057023937 is a deficient number, since it is larger than the sum of its proper divisors (8025343985).

18057023937 is a wasteful number, since it uses less digits than its factorization.

18057023937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006335999 (or 2006335996 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 18057023937 in words is "eighteen billion, fifty-seven million, twenty-three thousand, nine hundred thirty-seven".