1304755649 has 2 divisors, whose sum is σ = 1304755650. Its totient is φ = 1304755648.

The previous prime is 1304755637. The next prime is 1304755651. The reversal of 1304755649 is 9465574031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1294560400 + 10195249 = 35980^2 + 3193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304755649 - 2¹⁶ = 1304690113 is a prime.

It is a super-2 number, since 2×1304755649² = 3404774607194822402, which contains 22 as substring.

Together with 1304755651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1304755349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652377824 + 652377825.

It is an arithmetic number, because the mean of its divisors is an integer number (652377825).

Almost surely, 2^1304755649 is an apocalyptic number.

It is an amenable number.

1304755649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304755649 is an equidigital number, since it uses as much as digits as its factorization.

1304755649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 1304755649 is about 36121.4015370390. The cubic root of 1304755649 is about 1092.7221049303.

The spelling of 1304755649 in words is "one billion, three hundred four million, seven hundred fifty-five thousand, six hundred forty-nine".