1264434013 has 4 divisors (see below), whose sum is σ = 1265587740. Its totient is φ = 1263280288.

The previous prime is 1264433981. The next prime is 1264434029. The reversal of 1264434013 is 3104344621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127193284 + 1137240729 = 11278^2 + 33723^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264434013 - 2⁵ = 1264433981 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 (1264434053) 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, 575218 + ... + 577411.

It is an arithmetic number, because the mean of its divisors is an integer number (316396935).

Almost surely, 2^1264434013 is an apocalyptic number.

It is an amenable number.

1264434013 is a deficient number, since it is larger than the sum of its proper divisors (1153727).

1264434013 is a wasteful number, since it uses less digits than its factorization.

1264434013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153726.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1264434013 is about 35558.8809300855. The cubic root of 1264434013 is about 1081.3477723831.

Adding to 1264434013 its reverse (3104344621), we get a palindrome (4368778634).

The spelling of 1264434013 in words is "one billion, two hundred sixty-four million, four hundred thirty-four thousand, thirteen".