18059637391 has 16 divisors (see below), whose sum is σ = 18652291200. Its totient is φ = 17478532000.

The previous prime is 18059637377. The next prime is 18059637397. The reversal of 18059637391 is 19373695081.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18059637391 - 2⁷ = 18059637263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18059637397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058196 + ... + 1075126.

It is an arithmetic number, because the mean of its divisors is an integer number (1165768200).

Almost surely, 2^18059637391 is an apocalyptic number.

18059637391 is a deficient number, since it is larger than the sum of its proper divisors (592653809).

18059637391 is a wasteful number, since it uses less digits than its factorization.

18059637391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17270.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 18059637391 in words is "eighteen billion, fifty-nine million, six hundred thirty-seven thousand, three hundred ninety-one".