1264210513 has 2 divisors, whose sum is σ = 1264210514. Its totient is φ = 1264210512.

The previous prime is 1264210481. The next prime is 1264210517. The reversal of 1264210513 is 3150124621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677456784 + 586753729 = 26028^2 + 24223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264210513 - 2⁵ = 1264210481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264210517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632105256 + 632105257.

It is an arithmetic number, because the mean of its divisors is an integer number (632105257).

Almost surely, 2^1264210513 is an apocalyptic number.

It is an amenable number.

1264210513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264210513 is an equidigital number, since it uses as much as digits as its factorization.

1264210513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1264210513 is about 35555.7381163716. The cubic root of 1264210513 is about 1081.2840560046.

The spelling of 1264210513 in words is "one billion, two hundred sixty-four million, two hundred ten thousand, five hundred thirteen".