7920657163 has 2 divisors, whose sum is σ = 7920657164. Its totient is φ = 7920657162.

The previous prime is 7920657149. The next prime is 7920657211. The reversal of 7920657163 is 3617560297.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7920657163 - 2²⁵ = 7887102731 is a prime.

It is not a weakly prime, because it can be changed into another prime (7920457163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3960328581 + 3960328582.

It is an arithmetic number, because the mean of its divisors is an integer number (3960328582).

Almost surely, 2^7920657163 is an apocalyptic number.

7920657163 is a deficient number, since it is larger than the sum of its proper divisors (1).

7920657163 is an equidigital number, since it uses as much as digits as its factorization.

7920657163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 7920657163 is about 88998.0739285969. The cubic root of 7920657163 is about 1993.3661170440.

The spelling of 7920657163 in words is "seven billion, nine hundred twenty million, six hundred fifty-seven thousand, one hundred sixty-three".