268451899 has 2 divisors, whose sum is σ = 268451900. Its totient is φ = 268451898.

The previous prime is 268451867. The next prime is 268451903. The reversal of 268451899 is 998154862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268451899 - 2⁵ = 268451867 is a prime.

It is not a weakly prime, because it can be changed into another prime (268451809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134225949 + 134225950.

It is an arithmetic number, because the mean of its divisors is an integer number (134225950).

Almost surely, 2^268451899 is an apocalyptic number.

268451899 is a deficient number, since it is larger than the sum of its proper divisors (1).

268451899 is an equidigital number, since it uses as much as digits as its factorization.

268451899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 52.

The square root of 268451899 is about 16384.5017928529. The cubic root of 268451899 is about 645.0927487160.

The spelling of 268451899 in words is "two hundred sixty-eight million, four hundred fifty-one thousand, eight hundred ninety-nine".