1252863013 has 2 divisors, whose sum is σ = 1252863014. Its totient is φ = 1252863012.

The previous prime is 1252862999. The next prime is 1252863037. The reversal of 1252863013 is 3103682521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760821889 + 492041124 = 27583^2 + 22182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252863013 - 2⁵ = 1252862981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252863043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626431506 + 626431507.

It is an arithmetic number, because the mean of its divisors is an integer number (626431507).

Almost surely, 2^1252863013 is an apocalyptic number.

It is an amenable number.

1252863013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252863013 is an equidigital number, since it uses as much as digits as its factorization.

1252863013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1252863013 is about 35395.8050198043. The cubic root of 1252863013 is about 1078.0391411881.

The spelling of 1252863013 in words is "one billion, two hundred fifty-two million, eight hundred sixty-three thousand, thirteen".