793890138868 has 12 divisors (see below), whose sum is σ = 1389979245060. Its totient is φ = 396753211712.

The previous prime is 793890138859. The next prime is 793890138869. The reversal of 793890138868 is 868831098397.

It can be written as a sum of positive squares in 2 ways, for example, as 133730638864 + 660159500004 = 365692^2 + 812502^2 .

It is a junction number, because it is equal to n+sod(n) for n = 793890138797 and 793890138806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (793890138869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47955121 + ... + 47971672.

It is an arithmetic number, because the mean of its divisors is an integer number (115831603755).

Almost surely, 2^793890138868 is an apocalyptic number.

It is an amenable number.

793890138868 is a deficient number, since it is larger than the sum of its proper divisors (596089106192).

793890138868 is a wasteful number, since it uses less digits than its factorization.

793890138868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95928866 (or 95928864 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 70.

The spelling of 793890138868 in words is "seven hundred ninety-three billion, eight hundred ninety million, one hundred thirty-eight thousand, eight hundred sixty-eight".