18860317319 has 4 divisors (see below), whose sum is σ = 19027222896. Its totient is φ = 18693411744.

The previous prime is 18860317313. The next prime is 18860317321. The reversal of 18860317319 is 91371306881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18860317319 is a prime.

It is a super-2 number, since 2×18860317319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18860317313) 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, 83452619 + ... + 83452844.

It is an arithmetic number, because the mean of its divisors is an integer number (4756805724).

Almost surely, 2^18860317319 is an apocalyptic number.

18860317319 is a deficient number, since it is larger than the sum of its proper divisors (166905577).

18860317319 is a wasteful number, since it uses less digits than its factorization.

18860317319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166905576.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 18860317319 in words is "eighteen billion, eight hundred sixty million, three hundred seventeen thousand, three hundred nineteen".