7945813922 has 6 divisors (see below), whose sum is σ = 11918909979. Its totient is φ = 3972843930.

The previous prime is 7945813919. The next prime is 7945813961. The reversal of 7945813922 is 2293185497.

It can be written as a sum of positive squares in only one way, i.e., 3972906961 + 3972906961 = 63031^2 + 63031^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=63031.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 94547 + ... + 157577.

Almost surely, 2^7945813922 is an apocalyptic number.

7945813922 is a deficient number, since it is larger than the sum of its proper divisors (3973096057).

7945813922 is an frugal number, since it uses more digits than its factorization.

7945813922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126064 (or 63033 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 7945813922 is about 89139.2950499386. The cubic root of 7945813922 is about 1995.4742600638.

Multiplying 7945813922 by its sum of digits (50), we get a square (397290696100 = 630310²).

The spelling of 7945813922 in words is "seven billion, nine hundred forty-five million, eight hundred thirteen thousand, nine hundred twenty-two".