19807975948 has 6 divisors (see below), whose sum is σ = 34663957916. Its totient is φ = 9903987972.

The previous prime is 19807975939. The next prime is 19807975961. The reversal of 19807975948 is 84957970891.

It is a super-2 number, since 2×19807975948² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475996990 + ... + 2475996997.

Almost surely, 2^19807975948 is an apocalyptic number.

It is an amenable number.

19807975948 is a deficient number, since it is larger than the sum of its proper divisors (14855981968).

19807975948 is a wasteful number, since it uses less digits than its factorization.

19807975948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951993991 (or 4951993989 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 67.

The spelling of 19807975948 in words is "nineteen billion, eight hundred seven million, nine hundred seventy-five thousand, nine hundred forty-eight".