1264928413 has 4 divisors (see below), whose sum is σ = 1445632480. Its totient is φ = 1084224348.

The previous prime is 1264928393. The next prime is 1264928419. The reversal of 1264928413 is 3148294621.

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-1264928413 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 (1264928419) 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, 90352023 + ... + 90352036.

It is an arithmetic number, because the mean of its divisors is an integer number (361408120).

Almost surely, 2^1264928413 is an apocalyptic number.

It is an amenable number.

1264928413 is a deficient number, since it is larger than the sum of its proper divisors (180704067).

1264928413 is an equidigital number, since it uses as much as digits as its factorization.

1264928413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180704066.

The product of its digits is 82944, while the sum is 40.

The square root of 1264928413 is about 35565.8321004866. The cubic root of 1264928413 is about 1081.4886914738.

The spelling of 1264928413 in words is "one billion, two hundred sixty-four million, nine hundred twenty-eight thousand, four hundred thirteen".