19534935396 has 24 divisors (see below), whose sum is σ = 45636923584. Its totient is φ = 6503729760.

The previous prime is 19534935347. The next prime is 19534935397. The reversal of 19534935396 is 69353943591.

It is a super-2 number, since 2×19534935396² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19534935397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979135 + ... + 998886.

Almost surely, 2^19534935396 is an apocalyptic number.

It is an amenable number.

19534935396 is an abundant number, since it is smaller than the sum of its proper divisors (26101988188).

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

19534935396 is a wasteful number, since it uses less digits than its factorization.

19534935396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978851 (or 1978849 counting only the distinct ones).

The product of its digits is 11809800, while the sum is 57.

The spelling of 19534935396 in words is "nineteen billion, five hundred thirty-four million, nine hundred thirty-five thousand, three hundred ninety-six".