19634497036 has 24 divisors (see below), whose sum is σ = 42838903296. Its totient is φ = 7649803920.

The previous prime is 19634497019. The next prime is 19634497081. The reversal of 19634497036 is 63079443691.

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, 31873876 + ... + 31874491.

It is an arithmetic number, because the mean of its divisors is an integer number (1784954304).

Almost surely, 2^19634497036 is an apocalyptic number.

It is an amenable number.

19634497036 is an abundant number, since it is smaller than the sum of its proper divisors (23204406260).

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

19634497036 is a wasteful number, since it uses less digits than its factorization.

19634497036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63748389 (or 63748387 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 19634497036 in words is "nineteen billion, six hundred thirty-four million, four hundred ninety-seven thousand, thirty-six".