1264245311 has 8 divisors (see below), whose sum is σ = 1466417280. Its totient is φ = 1067464728.

The previous prime is 1264245289. The next prime is 1264245331. The reversal of 1264245311 is 1135424621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1264245311 - 2⁶ = 1264245247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264245331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347341 + ... + 1348278.

It is an arithmetic number, because the mean of its divisors is an integer number (183302160).

Almost surely, 2^1264245311 is an apocalyptic number.

1264245311 is a deficient number, since it is larger than the sum of its proper divisors (202171969).

1264245311 is an equidigital number, since it uses as much as digits as its factorization.

1264245311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695693.

The product of its digits is 5760, while the sum is 29.

The square root of 1264245311 is about 35556.2274573667. The cubic root of 1264245311 is about 1081.2939768675.

Adding to 1264245311 its reverse (1135424621), we get a palindrome (2399669932).

The spelling of 1264245311 in words is "one billion, two hundred sixty-four million, two hundred forty-five thousand, three hundred eleven".