19737068464 has 10 divisors (see below), whose sum is σ = 38240570180. Its totient is φ = 9868534224.

The previous prime is 19737068423. The next prime is 19737068509. The reversal of 19737068464 is 46486073791.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616783374 + ... + 616783405.

It is an arithmetic number, because the mean of its divisors is an integer number (3824057018).

Almost surely, 2^19737068464 is an apocalyptic number.

It is an amenable number.

19737068464 is a deficient number, since it is larger than the sum of its proper divisors (18503501716).

19737068464 is a wasteful number, since it uses less digits than its factorization.

19737068464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233566787 (or 1233566781 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 19737068464 in words is "nineteen billion, seven hundred thirty-seven million, sixty-eight thousand, four hundred sixty-four".