19311319492 has 24 divisors (see below), whose sum is σ = 33916428000. Its totient is φ = 9620968896.

The previous prime is 19311319487. The next prime is 19311319499. The reversal of 19311319492 is 29491311391.

It is not an unprimeable number, because it can be changed into a prime (19311319499) 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, 1473384 + ... + 1486432.

It is an arithmetic number, because the mean of its divisors is an integer number (1413184500).

Almost surely, 2^19311319492 is an apocalyptic number.

It is an amenable number.

19311319492 is a deficient number, since it is larger than the sum of its proper divisors (14605108508).

19311319492 is a wasteful number, since it uses less digits than its factorization.

19311319492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14355 (or 14353 counting only the distinct ones).

The product of its digits is 52488, while the sum is 43.

The spelling of 19311319492 in words is "nineteen billion, three hundred eleven million, three hundred nineteen thousand, four hundred ninety-two".