1304538817 has 4 divisors (see below), whose sum is σ = 1361257920. Its totient is φ = 1247819716.

The previous prime is 1304538811. The next prime is 1304538827. The reversal of 1304538817 is 7188354031.

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 not a de Polignac number, because 1304538817 - 2²³ = 1296150209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304538817.

It is not an unprimeable number, because it can be changed into a prime (1304538811) 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, 28359517 + ... + 28359562.

It is an arithmetic number, because the mean of its divisors is an integer number (340314480).

Almost surely, 2^1304538817 is an apocalyptic number.

It is an amenable number.

1304538817 is a deficient number, since it is larger than the sum of its proper divisors (56719103).

1304538817 is an equidigital number, since it uses as much as digits as its factorization.

1304538817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56719102.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1304538817 is about 36118.3999784044. The cubic root of 1304538817 is about 1092.6615699057.

The spelling of 1304538817 in words is "one billion, three hundred four million, five hundred thirty-eight thousand, eight hundred seventeen".