19317217983 has 32 divisors (see below), whose sum is σ = 30027787776. Its totient is φ = 10816910208.

The previous prime is 19317217979. The next prime is 19317217987. The reversal of 19317217983 is 38971271391.

It is an interprime number because it is at equal distance from previous prime (19317217979) and next prime (19317217987).

It is not a de Polignac number, because 19317217983 - 2² = 19317217979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19317217987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 939216 + ... + 959562.

It is an arithmetic number, because the mean of its divisors is an integer number (938368368).

Almost surely, 2^19317217983 is an apocalyptic number.

19317217983 is a deficient number, since it is larger than the sum of its proper divisors (10710569793).

19317217983 is a wasteful number, since it uses less digits than its factorization.

19317217983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21263.

The product of its digits is 571536, while the sum is 51.

The spelling of 19317217983 in words is "nineteen billion, three hundred seventeen million, two hundred seventeen thousand, nine hundred eighty-three".