19319495123 has 8 divisors (see below), whose sum is σ = 20089243200. Its totient is φ = 18556651008.

The previous prime is 19319495119. The next prime is 19319495149. The reversal of 19319495123 is 32159491391.

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 19319495123 - 2² = 19319495119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19319425123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720283 + ... + 1731476.

It is an arithmetic number, because the mean of its divisors is an integer number (2511155400).

Almost surely, 2^19319495123 is an apocalyptic number.

19319495123 is a deficient number, since it is larger than the sum of its proper divisors (769748077).

19319495123 is a wasteful number, since it uses less digits than its factorization.

19319495123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451981.

The product of its digits is 262440, while the sum is 47.

The spelling of 19319495123 in words is "nineteen billion, three hundred nineteen million, four hundred ninety-five thousand, one hundred twenty-three".