18586231039489 has 4 divisors (see below), whose sum is σ = 18759934133424. Its totient is φ = 18412527945556.

The previous prime is 18586231039483. The next prime is 18586231039499. The reversal of 18586231039489 is 98493013268581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18586231039489 - 2¹³ = 18586231031297 is a prime.

It is a super-2 number, since 2×18586231039489² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18586231039483) 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, 86851546807 + ... + 86851547020.

It is an arithmetic number, because the mean of its divisors is an integer number (4689983533356).

Almost surely, 2^{18586231039489} is an apocalyptic number.

It is an amenable number.

18586231039489 is a deficient number, since it is larger than the sum of its proper divisors (173703093935).

18586231039489 is a wasteful number, since it uses less digits than its factorization.

18586231039489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173703093934.

The product of its (nonzero) digits is 89579520, while the sum is 67.

The spelling of 18586231039489 in words is "eighteen trillion, five hundred eighty-six billion, two hundred thirty-one million, thirty-nine thousand, four hundred eighty-nine".