1275330817 has 2 divisors, whose sum is σ = 1275330818. Its totient is φ = 1275330816.

The previous prime is 1275330811. The next prime is 1275330829. The reversal of 1275330817 is 7180335721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787981041 + 487349776 = 28071^2 + 22076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275330817 - 2¹⁵ = 1275298049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275330811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637665408 + 637665409.

It is an arithmetic number, because the mean of its divisors is an integer number (637665409).

Almost surely, 2^1275330817 is an apocalyptic number.

It is an amenable number.

1275330817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275330817 is an equidigital number, since it uses as much as digits as its factorization.

1275330817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 1275330817 is about 35711.7742068355. The cubic root of 1275330817 is about 1084.4452180161.

The spelling of 1275330817 in words is "one billion, two hundred seventy-five million, three hundred thirty thousand, eight hundred seventeen".