7893397788 has 24 divisors (see below), whose sum is σ = 18460673280. Its totient is φ = 2625026160.

The previous prime is 7893397781. The next prime is 7893397793. The reversal of 7893397788 is 8877933987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7893397781) 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 7 ways as a sum of consecutive naturals, for example, 757918 + ... + 768261.

It is an arithmetic number, because the mean of its divisors is an integer number (769194720).

Almost surely, 2^7893397788 is an apocalyptic number.

It is an amenable number.

7893397788 is an abundant number, since it is smaller than the sum of its proper divisors (10567275492).

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

7893397788 is a wasteful number, since it uses less digits than its factorization.

7893397788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526617 (or 1526615 counting only the distinct ones).

The product of its digits is 128024064, while the sum is 69.

The square root of 7893397788 is about 88844.7960659486. The cubic root of 7893397788 is about 1991.0767291615.

The spelling of 7893397788 in words is "seven billion, eight hundred ninety-three million, three hundred ninety-seven thousand, seven hundred eighty-eight".