161266163 has 2 divisors, whose sum is σ = 161266164. Its totient is φ = 161266162.

The previous prime is 161266111. The next prime is 161266207. The reversal of 161266163 is 361662161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161266163 - 2²⁴ = 144488947 is a prime.

It is not a weakly prime, because it can be changed into another prime (161266103) 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 as a sum of consecutive naturals, namely, 80633081 + 80633082.

It is an arithmetic number, because the mean of its divisors is an integer number (80633082).

Almost surely, 2^161266163 is an apocalyptic number.

161266163 is a deficient number, since it is larger than the sum of its proper divisors (1).

161266163 is an equidigital number, since it uses as much as digits as its factorization.

161266163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 161266163 is about 12699.0615007567. The cubic root of 161266163 is about 544.3118019953.

The spelling of 161266163 in words is "one hundred sixty-one million, two hundred sixty-six thousand, one hundred sixty-three".