18413573439 has 8 divisors (see below), whose sum is σ = 25214983600. Its totient is φ = 11943939456.

The previous prime is 18413573413. The next prime is 18413573449. The reversal of 18413573439 is 93437531481.

It is a happy number.

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

It is not a de Polignac number, because 18413573439 - 2⁹ = 18413572927 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 (18413573449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82943914 + ... + 82944135.

It is an arithmetic number, because the mean of its divisors is an integer number (3151872950).

Almost surely, 2^18413573439 is an apocalyptic number.

18413573439 is a deficient number, since it is larger than the sum of its proper divisors (6801410161).

18413573439 is a wasteful number, since it uses less digits than its factorization.

18413573439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165888089.

The product of its digits is 1088640, while the sum is 48.

The spelling of 18413573439 in words is "eighteen billion, four hundred thirteen million, five hundred seventy-three thousand, four hundred thirty-nine".