19688633692 has 48 divisors (see below), whose sum is σ = 42437204992. Its totient is φ = 7783231680.

The previous prime is 19688633689. The next prime is 19688633717. The reversal of 19688633692 is 29633688691.

It is a self number, because there is not a number n which added to its sum of digits gives 19688633692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498967 + ... + 536977.

Almost surely, 2^19688633692 is an apocalyptic number.

It is an amenable number.

19688633692 is an abundant number, since it is smaller than the sum of its proper divisors (22748571300).

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

19688633692 is a wasteful number, since it uses less digits than its factorization.

19688633692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39458 (or 39456 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 61.

The spelling of 19688633692 in words is "nineteen billion, six hundred eighty-eight million, six hundred thirty-three thousand, six hundred ninety-two".