18319674489 has 16 divisors (see below), whose sum is σ = 25032920640. Its totient is φ = 11910032640.

The previous prime is 18319674479. The next prime is 18319674511. The reversal of 18319674489 is 98447691381.

It is not a de Polignac number, because 18319674489 - 2²⁸ = 18051239033 is a prime.

It is a super-2 number, since 2×18319674489² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18319674479) 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, 261042 + ... + 323700.

It is an arithmetic number, because the mean of its divisors is an integer number (1564557540).

Almost surely, 2^18319674489 is an apocalyptic number.

It is an amenable number.

18319674489 is a deficient number, since it is larger than the sum of its proper divisors (6713246151).

18319674489 is a wasteful number, since it uses less digits than its factorization.

18319674489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65080.

The product of its digits is 10450944, while the sum is 60.

The spelling of 18319674489 in words is "eighteen billion, three hundred nineteen million, six hundred seventy-four thousand, four hundred eighty-nine".