19317875923 has 2 divisors, whose sum is σ = 19317875924. Its totient is φ = 19317875922.

The previous prime is 19317875891. The next prime is 19317876001. The reversal of 19317875923 is 32957871391.

It is a weak prime.

It is an emirp because it is prime and its reverse (32957871391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19317875923 - 2⁵ = 19317875891 is a prime.

It is not a weakly prime, because it can be changed into another prime (19317875023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9658937961 + 9658937962.

It is an arithmetic number, because the mean of its divisors is an integer number (9658937962).

Almost surely, 2^19317875923 is an apocalyptic number.

19317875923 is a deficient number, since it is larger than the sum of its proper divisors (1).

19317875923 is an equidigital number, since it uses as much as digits as its factorization.

19317875923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 55.

The spelling of 19317875923 in words is "nineteen billion, three hundred seventeen million, eight hundred seventy-five thousand, nine hundred twenty-three".