1304261613 has 12 divisors (see below), whose sum is σ = 1889367168. Its totient is φ = 866999880.

The previous prime is 1304261591. The next prime is 1304261617. The reversal of 1304261613 is 3161624031.

1304261613 is a `hidden beast` number, since 1 + 3 + 0 + 42 + 6 + 1 + 613 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1304261613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304261617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205693 + ... + 211938.

It is an arithmetic number, because the mean of its divisors is an integer number (157447264).

Almost surely, 2^1304261613 is an apocalyptic number.

It is an amenable number.

1304261613 is a deficient number, since it is larger than the sum of its proper divisors (585105555).

1304261613 is a wasteful number, since it uses less digits than its factorization.

1304261613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417984 (or 417981 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1304261613 is about 36114.5623398651. The cubic root of 1304261613 is about 1092.5841704931.

Adding to 1304261613 its reverse (3161624031), we get a palindrome (4465885644).

The spelling of 1304261613 in words is "one billion, three hundred four million, two hundred sixty-one thousand, six hundred thirteen".