19317974539 has 8 divisors (see below), whose sum is σ = 19946473472. Its totient is φ = 18689809320.

The previous prime is 19317974509. The next prime is 19317974561. The reversal of 19317974539 is 93547971391.

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 19317974539 - 2¹⁵ = 19317941771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19317974509) 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, 37012 + ... + 200014.

It is an arithmetic number, because the mean of its divisors is an integer number (2493309184).

Almost surely, 2^19317974539 is an apocalyptic number.

19317974539 is a deficient number, since it is larger than the sum of its proper divisors (628498933).

19317974539 is a wasteful number, since it uses less digits than its factorization.

19317974539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166857.

The product of its digits is 6429780, while the sum is 58.

The spelling of 19317974539 in words is "nineteen billion, three hundred seventeen million, nine hundred seventy-four thousand, five hundred thirty-nine".