268806163 has 2 divisors, whose sum is σ = 268806164. Its totient is φ = 268806162.

The previous prime is 268806143. The next prime is 268806169. The reversal of 268806163 is 361608862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268806163 is a prime.

It is not a weakly prime, because it can be changed into another prime (268806169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134403081 + 134403082.

It is an arithmetic number, because the mean of its divisors is an integer number (134403082).

Almost surely, 2^268806163 is an apocalyptic number.

268806163 is a deficient number, since it is larger than the sum of its proper divisors (1).

268806163 is an equidigital number, since it uses as much as digits as its factorization.

268806163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 268806163 is about 16395.3091767127. The cubic root of 268806163 is about 645.3763906939.

The spelling of 268806163 in words is "two hundred sixty-eight million, eight hundred six thousand, one hundred sixty-three".