1304551009 has 2 divisors, whose sum is σ = 1304551010. Its totient is φ = 1304551008.

The previous prime is 1304550983. The next prime is 1304551013. The reversal of 1304551009 is 9001554031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164720384 + 139830625 = 34128^2 + 11825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304551009 - 2⁵ = 1304550977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1304551309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652275504 + 652275505.

It is an arithmetic number, because the mean of its divisors is an integer number (652275505).

Almost surely, 2^1304551009 is an apocalyptic number.

It is an amenable number.

1304551009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304551009 is an equidigital number, since it uses as much as digits as its factorization.

1304551009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1304551009 is about 36118.5687562506. The cubic root of 1304551009 is about 1092.6649738387.

The spelling of 1304551009 in words is "one billion, three hundred four million, five hundred fifty-one thousand, nine".