19793326164 has 12 divisors (see below), whose sum is σ = 46184427744. Its totient is φ = 6597775384.

The previous prime is 19793326159. The next prime is 19793326243. The reversal of 19793326164 is 46162339791.

It is a tau number, because it is divible by the number of its divisors (12).

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, 824721912 + ... + 824721935.

It is an arithmetic number, because the mean of its divisors is an integer number (3848702312).

Almost surely, 2^19793326164 is an apocalyptic number.

It is an amenable number.

19793326164 is an abundant number, since it is smaller than the sum of its proper divisors (26391101580).

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

19793326164 is a wasteful number, since it uses less digits than its factorization.

19793326164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649443854 (or 1649443852 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The spelling of 19793326164 in words is "nineteen billion, seven hundred ninety-three million, three hundred twenty-six thousand, one hundred sixty-four".