19131967404 has 36 divisors (see below), whose sum is σ = 52757850600. Its totient is φ = 5797565760.

The previous prime is 19131967357. The next prime is 19131967423. The reversal of 19131967404 is 40476913191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19131967404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24156129 + ... + 24156920.

It is an arithmetic number, because the mean of its divisors is an integer number (1465495850).

Almost surely, 2^19131967404 is an apocalyptic number.

It is an amenable number.

19131967404 is an abundant number, since it is smaller than the sum of its proper divisors (33625883196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19131967404 is a wasteful number, since it uses less digits than its factorization.

19131967404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48313070 (or 48313065 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 19131967404 in words is "nineteen billion, one hundred thirty-one million, nine hundred sixty-seven thousand, four hundred four".