18364431059 has 8 divisors (see below), whose sum is σ = 19778199840. Its totient is φ = 16950822336.

The previous prime is 18364431049. The next prime is 18364431083. The reversal of 18364431059 is 95013446381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18364431059 - 2²⁴ = 18347653843 is a prime.

It is a super-2 number, since 2×18364431059² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18364431049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315002 + ... + 368720.

It is an arithmetic number, because the mean of its divisors is an integer number (2472274980).

Almost surely, 2^18364431059 is an apocalyptic number.

18364431059 is a deficient number, since it is larger than the sum of its proper divisors (1413768781).

18364431059 is a wasteful number, since it uses less digits than its factorization.

18364431059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80029.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 18364431059 in words is "eighteen billion, three hundred sixty-four million, four hundred thirty-one thousand, fifty-nine".