19645293196 has 24 divisors (see below), whose sum is σ = 34704101376. Its totient is φ = 9730077840.

The previous prime is 19645293149. The next prime is 19645293229. The reversal of 19645293196 is 69139254691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298791 + ... + 358561.

It is an arithmetic number, because the mean of its divisors is an integer number (1446004224).

Almost surely, 2^19645293196 is an apocalyptic number.

It is an amenable number.

19645293196 is a deficient number, since it is larger than the sum of its proper divisors (15058808180).

19645293196 is a wasteful number, since it uses less digits than its factorization.

19645293196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60549 (or 60547 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 55.

The spelling of 19645293196 in words is "nineteen billion, six hundred forty-five million, two hundred ninety-three thousand, one hundred ninety-six".