7989964168 has 16 divisors (see below), whose sum is σ = 14982172380. Its totient is φ = 3994718208.

The previous prime is 7989964153. The next prime is 7989964201. The reversal of 7989964168 is 8614699897.

It can be written as a sum of positive squares in 2 ways, for example, as 7967704644 + 22259524 = 89262^2 + 4718^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167080 + ... + 209512.

Almost surely, 2^7989964168 is an apocalyptic number.

It is an amenable number.

7989964168 is a deficient number, since it is larger than the sum of its proper divisors (6992208212).

7989964168 is a wasteful number, since it uses less digits than its factorization.

7989964168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65976 (or 65972 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 67.

The square root of 7989964168 is about 89386.5994878427. The cubic root of 7989964168 is about 1999.1633307077.

The spelling of 7989964168 in words is "seven billion, nine hundred eighty-nine million, nine hundred sixty-four thousand, one hundred sixty-eight".