19691379192 has 32 divisors (see below), whose sum is σ = 49461770880. Its totient is φ = 6532683360.

The previous prime is 19691379187. The next prime is 19691379271. The reversal of 19691379192 is 29197319691.

It is a congruent number.

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, 1939188 + ... + 1949315.

It is an arithmetic number, because the mean of its divisors is an integer number (1545680340).

Almost surely, 2^19691379192 is an apocalyptic number.

19691379192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19691379192 is an abundant number, since it is smaller than the sum of its proper divisors (29770391688).

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

19691379192 is a wasteful number, since it uses less digits than its factorization.

19691379192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888723 (or 3888719 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 57.

The spelling of 19691379192 in words is "nineteen billion, six hundred ninety-one million, three hundred seventy-nine thousand, one hundred ninety-two".