19875289808 has 20 divisors (see below), whose sum is σ = 42009135648. Its totient is φ = 9034222560.

The previous prime is 19875289799. The next prime is 19875289817. The reversal of 19875289808 is 80898257891.

It is an interprime number because it is at equal distance from previous prime (19875289799) and next prime (19875289817).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56463716 + ... + 56464067.

Almost surely, 2^19875289808 is an apocalyptic number.

It is an amenable number.

19875289808 is an abundant number, since it is smaller than the sum of its proper divisors (22133845840).

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

19875289808 is a wasteful number, since it uses less digits than its factorization.

19875289808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112927802 (or 112927796 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 65.

The spelling of 19875289808 in words is "nineteen billion, eight hundred seventy-five million, two hundred eighty-nine thousand, eight hundred eight".