1264650313 has 4 divisors (see below), whose sum is σ = 1266502608. Its totient is φ = 1262798020.

The previous prime is 1264650293. The next prime is 1264650323. The reversal of 1264650313 is 3130564621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264650313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264650323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925123 + ... + 926488.

It is an arithmetic number, because the mean of its divisors is an integer number (316625652).

Almost surely, 2^1264650313 is an apocalyptic number.

It is an amenable number.

1264650313 is a deficient number, since it is larger than the sum of its proper divisors (1852295).

1264650313 is an equidigital number, since it uses as much as digits as its factorization.

1264650313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852294.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1264650313 is about 35561.9222343225. The cubic root of 1264650313 is about 1081.4094290044.

The spelling of 1264650313 in words is "one billion, two hundred sixty-four million, six hundred fifty thousand, three hundred thirteen".