19679757208 has 16 divisors (see below), whose sum is σ = 36942614280. Its totient is φ = 9828393408.

The previous prime is 19679757197. The next prime is 19679757217. The reversal of 19679757208 is 80275797691.

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, 1428366 + ... + 1442077.

Almost surely, 2^19679757208 is an apocalyptic number.

It is an amenable number.

19679757208 is a deficient number, since it is larger than the sum of its proper divisors (17262857072).

19679757208 is a wasteful number, since it uses less digits than its factorization.

19679757208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871306 (or 2871302 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 61.

The spelling of 19679757208 in words is "nineteen billion, six hundred seventy-nine million, seven hundred fifty-seven thousand, two hundred eight".