19527994108 has 18 divisors (see below), whose sum is σ = 39753416976. Its totient is φ = 8369140248.

The previous prime is 19527994069. The next prime is 19527994127. The reversal of 19527994108 is 80149972591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49816116 + ... + 49816507.

Almost surely, 2^19527994108 is an apocalyptic number.

It is an amenable number.

19527994108 is an abundant number, since it is smaller than the sum of its proper divisors (20225422868).

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

19527994108 is a wasteful number, since it uses less digits than its factorization.

19527994108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99632641 (or 99632632 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 19527994108 in words is "nineteen billion, five hundred twenty-seven million, nine hundred ninety-four thousand, one hundred eight".