7922813885 has 16 divisors (see below), whose sum is σ = 11159239296. Its totient is φ = 5285953728.

The previous prime is 7922813839. The next prime is 7922813917. The reversal of 7922813885 is 5883182297.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7922813885 - 2³² = 3627846589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3057707 + ... + 3060296.

It is an arithmetic number, because the mean of its divisors is an integer number (697452456).

Almost surely, 2^7922813885 is an apocalyptic number.

It is an amenable number.

7922813885 is a deficient number, since it is larger than the sum of its proper divisors (3236425411).

7922813885 is a wasteful number, since it uses less digits than its factorization.

7922813885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6118052.

The product of its digits is 1935360, while the sum is 53.

The square root of 7922813885 is about 89010.1897818446. The cubic root of 7922813885 is about 1993.5470257037.

The spelling of 7922813885 in words is "seven billion, nine hundred twenty-two million, eight hundred thirteen thousand, eight hundred eighty-five".