268981169 has 2 divisors, whose sum is σ = 268981170. Its totient is φ = 268981168.

The previous prime is 268981099. The next prime is 268981187. The reversal of 268981169 is 961189862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137007025 + 131974144 = 11705^2 + 11488^2 .

It is a cyclic number.

It is not a de Polignac number, because 268981169 - 2⁸ = 268980913 is a prime.

It is a super-2 number, since 2×268981169² = 144701738553213122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268981189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134490584 + 134490585.

It is an arithmetic number, because the mean of its divisors is an integer number (134490585).

Almost surely, 2^268981169 is an apocalyptic number.

It is an amenable number.

268981169 is a deficient number, since it is larger than the sum of its proper divisors (1).

268981169 is an equidigital number, since it uses as much as digits as its factorization.

268981169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 50.

The square root of 268981169 is about 16400.6453836427. The cubic root of 268981169 is about 645.5164175412.

The spelling of 268981169 in words is "two hundred sixty-eight million, nine hundred eighty-one thousand, one hundred sixty-nine".