268249493 has 2 divisors, whose sum is σ = 268249494. Its totient is φ = 268249492.

The previous prime is 268249463. The next prime is 268249547. The reversal of 268249493 is 394942862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268238884 + 10609 = 16378^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 268249493 - 2⁸ = 268249237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268249433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134124746 + 134124747.

It is an arithmetic number, because the mean of its divisors is an integer number (134124747).

Almost surely, 2^268249493 is an apocalyptic number.

It is an amenable number.

268249493 is a deficient number, since it is larger than the sum of its proper divisors (1).

268249493 is an equidigital number, since it uses as much as digits as its factorization.

268249493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 47.

The square root of 268249493 is about 16378.3238763922. The cubic root of 268249493 is about 644.9305800335.

The spelling of 268249493 in words is "two hundred sixty-eight million, two hundred forty-nine thousand, four hundred ninety-three".