19014972664 has 16 divisors (see below), whose sum is σ = 35691465600. Its totient is φ = 9497248512.

The previous prime is 19014972659. The next prime is 19014972709. The reversal of 19014972664 is 46627941091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271832 + ... + 1286695.

It is an arithmetic number, because the mean of its divisors is an integer number (2230716600).

Almost surely, 2^19014972664 is an apocalyptic number.

It is an amenable number.

19014972664 is a deficient number, since it is larger than the sum of its proper divisors (16676492936).

19014972664 is a wasteful number, since it uses less digits than its factorization.

19014972664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559462 (or 2559458 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 19014972664 in words is "nineteen billion, fourteen million, nine hundred seventy-two thousand, six hundred sixty-four".