19791668196 has 48 divisors (see below), whose sum is σ = 51332561280. Its totient is φ = 6594544800.

The previous prime is 19791668191. The next prime is 19791668203. The reversal of 19791668196 is 69186619791.

It is not an unprimeable number, because it can be changed into a prime (19791668191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239590 + ... + 311426.

It is an arithmetic number, because the mean of its divisors is an integer number (1069428360).

Almost surely, 2^19791668196 is an apocalyptic number.

It is an amenable number.

19791668196 is an abundant number, since it is smaller than the sum of its proper divisors (31540893084).

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

19791668196 is a wasteful number, since it uses less digits than its factorization.

19791668196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74401 (or 74393 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The spelling of 19791668196 in words is "nineteen billion, seven hundred ninety-one million, six hundred sixty-eight thousand, one hundred ninety-six".