7963956081 has 27 divisors (see below), whose sum is σ = 11639259723. Its totient is φ = 5247370800.

The previous prime is 7963956073. The next prime is 7963956107. The reversal of 7963956081 is 1806593697.

The square root of 7963956081 is 89241.

It is a perfect power (a square), and thus also a powerful number.

7963956081 is a `hidden beast` number, since 79 + 6 + 3 + 9 + 560 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7803072225 + 160883856 = 88335^2 + 12684^2 .

It is not a de Polignac number, because 7963956081 - 2³ = 7963956073 is a prime.

It is a super-2 number, since 2×7963956081² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7963956041) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 40426075 + ... + 40426271.

Almost surely, 2^7963956081 is an apocalyptic number.

7963956081 is the 89241-st square number.

7963956081 is the 44621-st centered octagonal number.

It is an amenable number.

7963956081 is a deficient number, since it is larger than the sum of its proper divisors (3675303642).

7963956081 is an equidigital number, since it uses as much as digits as its factorization.

7963956081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The cubic root of 7963956081 is about 1996.9918177716.

The spelling of 7963956081 in words is "seven billion, nine hundred sixty-three million, nine hundred fifty-six thousand, eighty-one".