19691901196 has 24 divisors (see below), whose sum is σ = 37938534480. Its totient is φ = 8868744000.

The previous prime is 19691901179. The next prime is 19691901197. The reversal of 19691901196 is 69110919691.

It is not an unprimeable number, because it can be changed into a prime (19691901197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048155 + ... + 2057746.

It is an arithmetic number, because the mean of its divisors is an integer number (1580772270).

Almost surely, 2^19691901196 is an apocalyptic number.

It is an amenable number.

19691901196 is a deficient number, since it is larger than the sum of its proper divisors (18246633284).

19691901196 is a wasteful number, since it uses less digits than its factorization.

19691901196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106025 (or 4106023 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 52.

The spelling of 19691901196 in words is "nineteen billion, six hundred ninety-one million, nine hundred one thousand, one hundred ninety-six".