1264418313 has 4 divisors (see below), whose sum is σ = 1685891088. Its totient is φ = 842945540.

The previous prime is 1264418291. The next prime is 1264418369. The reversal of 1264418313 is 3138144621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3138144621 = 3 ⋅1046048207.

It is a cyclic number.

It is not a de Polignac number, because 1264418313 - 2⁶ = 1264418249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1264418383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210736383 + ... + 210736388.

It is an arithmetic number, because the mean of its divisors is an integer number (421472772).

Almost surely, 2^1264418313 is an apocalyptic number.

It is an amenable number.

1264418313 is a deficient number, since it is larger than the sum of its proper divisors (421472775).

1264418313 is an equidigital number, since it uses as much as digits as its factorization.

1264418313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421472774.

The product of its digits is 13824, while the sum is 33.

The square root of 1264418313 is about 35558.6601687971. The cubic root of 1264418313 is about 1081.3432968022.

The spelling of 1264418313 in words is "one billion, two hundred sixty-four million, four hundred eighteen thousand, three hundred thirteen".