268518973 has 2 divisors, whose sum is σ = 268518974. Its totient is φ = 268518972.

The previous prime is 268518967. The next prime is 268518979. The reversal of 268518973 is 379815862.

It is a balanced prime because it is at equal distance from previous prime (268518967) and next prime (268518979).

It can be written as a sum of positive squares in only one way, i.e., 264973284 + 3545689 = 16278^2 + 1883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268518973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268518979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134259486 + 134259487.

It is an arithmetic number, because the mean of its divisors is an integer number (134259487).

Almost surely, 2^268518973 is an apocalyptic number.

It is an amenable number.

268518973 is a deficient number, since it is larger than the sum of its proper divisors (1).

268518973 is an equidigital number, since it uses as much as digits as its factorization.

268518973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 268518973 is about 16386.5485383591. The cubic root of 268518973 is about 645.1464707521.

The spelling of 268518973 in words is "two hundred sixty-eight million, five hundred eighteen thousand, nine hundred seventy-three".