268395013 has 2 divisors, whose sum is σ = 268395014. Its totient is φ = 268395012.

The previous prime is 268394977. The next prime is 268395037. The reversal of 268395013 is 310593862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263802564 + 4592449 = 16242^2 + 2143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268395013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268395313) 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, 134197506 + 134197507.

It is an arithmetic number, because the mean of its divisors is an integer number (134197507).

Almost surely, 2^268395013 is an apocalyptic number.

It is an amenable number.

268395013 is a deficient number, since it is larger than the sum of its proper divisors (1).

268395013 is an equidigital number, since it uses as much as digits as its factorization.

268395013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 268395013 is about 16382.7657310968. The cubic root of 268395013 is about 645.0471796108.

The spelling of 268395013 in words is "two hundred sixty-eight million, three hundred ninety-five thousand, thirteen".