1262648393 has 2 divisors, whose sum is σ = 1262648394. Its totient is φ = 1262648392.

The previous prime is 1262648381. The next prime is 1262648399. The reversal of 1262648393 is 3938462621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935870464 + 326777929 = 30592^2 + 18077^2 .

It is a cyclic number.

It is not a de Polignac number, because 1262648393 - 2⁴ = 1262648377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1262648399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631324196 + 631324197.

It is an arithmetic number, because the mean of its divisors is an integer number (631324197).

Almost surely, 2^1262648393 is an apocalyptic number.

It is an amenable number.

1262648393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262648393 is an equidigital number, since it uses as much as digits as its factorization.

1262648393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 1262648393 is about 35533.7641265318. The cubic root of 1262648393 is about 1080.8385100507.

The spelling of 1262648393 in words is "one billion, two hundred sixty-two million, six hundred forty-eight thousand, three hundred ninety-three".