19293305764 has 12 divisors (see below), whose sum is σ = 33764264604. Its totient is φ = 9646373024.

The previous prime is 19293305719. The next prime is 19293305777. The reversal of 19293305764 is 46750339291.

It can be written as a sum of positive squares in 2 ways, for example, as 12463936164 + 6829369600 = 111642^2 + 82640^2 .

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, 206754 + ... + 285190.

It is an arithmetic number, because the mean of its divisors is an integer number (2813688717).

Almost surely, 2^19293305764 is an apocalyptic number.

It is an amenable number.

19293305764 is a deficient number, since it is larger than the sum of its proper divisors (14470958840).

19293305764 is a wasteful number, since it uses less digits than its factorization.

19293305764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139934 (or 139932 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 19293305764 in words is "nineteen billion, two hundred ninety-three million, three hundred five thousand, seven hundred sixty-four".