19796343939 has 6 divisors (see below), whose sum is σ = 28594719036. Its totient is φ = 13197562620.

The previous prime is 19796343907. The next prime is 19796343967. The reversal of 19796343939 is 93934369791.

19796343939 is a `hidden beast` number, since 197 + 9 + 6 + 3 + 439 + 3 + 9 = 666.

It is not a de Polignac number, because 19796343939 - 2⁵ = 19796343907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19796333939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1099796877 + ... + 1099796894.

It is an arithmetic number, because the mean of its divisors is an integer number (4765786506).

Almost surely, 2^19796343939 is an apocalyptic number.

19796343939 is a deficient number, since it is larger than the sum of its proper divisors (8798375097).

19796343939 is a wasteful number, since it uses less digits than its factorization.

19796343939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199593777 (or 2199593774 counting only the distinct ones).

The product of its digits is 29760696, while the sum is 63.

The spelling of 19796343939 in words is "nineteen billion, seven hundred ninety-six million, three hundred forty-three thousand, nine hundred thirty-nine".