18594131321 has 8 divisors (see below), whose sum is σ = 18667734624. Its totient is φ = 18520613280.

The previous prime is 18594131317. The next prime is 18594131323. The reversal of 18594131321 is 12313149581.

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 18594131321 - 2² = 18594131317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18594131323) 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, 434861 + ... + 475701.

It is an arithmetic number, because the mean of its divisors is an integer number (2333466828).

Almost surely, 2^18594131321 is an apocalyptic number.

It is an amenable number.

18594131321 is a deficient number, since it is larger than the sum of its proper divisors (73603303).

18594131321 is a wasteful number, since it uses less digits than its factorization.

18594131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42631.

The product of its digits is 25920, while the sum is 38.

The spelling of 18594131321 in words is "eighteen billion, five hundred ninety-four million, one hundred thirty-one thousand, three hundred twenty-one".