1264302568 has 16 divisors (see below), whose sum is σ = 2428386660. Its totient is φ = 616732800.

The previous prime is 1264302553. The next prime is 1264302569. The reversal of 1264302568 is 8652034621.

It can be written as a sum of positive squares in 2 ways, for example, as 1261812484 + 2490084 = 35522^2 + 1578^2 .

It is not an unprimeable number, because it can be changed into a prime (1264302569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926963 + ... + 1927618.

Almost surely, 2^1264302568 is an apocalyptic number.

It is an amenable number.

1264302568 is a deficient number, since it is larger than the sum of its proper divisors (1164084092).

1264302568 is a wasteful number, since it uses less digits than its factorization.

1264302568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854628 (or 3854624 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1264302568 is about 35557.0326095978. The cubic root of 1264302568 is about 1081.3103003648.

The spelling of 1264302568 in words is "one billion, two hundred sixty-four million, three hundred two thousand, five hundred sixty-eight".