268981099 has 2 divisors, whose sum is σ = 268981100. Its totient is φ = 268981098.

The previous prime is 268981091. The next prime is 268981169. The reversal of 268981099 is 990189862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268981099 - 2³ = 268981091 is a prime.

It is not a weakly prime, because it can be changed into another prime (268981091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134490549 + 134490550.

It is an arithmetic number, because the mean of its divisors is an integer number (134490550).

Almost surely, 2^268981099 is an apocalyptic number.

268981099 is a deficient number, since it is larger than the sum of its proper divisors (1).

268981099 is an equidigital number, since it uses as much as digits as its factorization.

268981099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 268981099 is about 16400.6432495802. The cubic root of 268981099 is about 645.5163615446.

The spelling of 268981099 in words is "two hundred sixty-eight million, nine hundred eighty-one thousand, ninety-nine".