1345592609 has 2 divisors, whose sum is σ = 1345592610. Its totient is φ = 1345592608.

The previous prime is 1345592561. The next prime is 1345592617. The reversal of 1345592609 is 9062955431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742399009 + 603193600 = 27247^2 + 24560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345592609 - 2²⁴ = 1328815393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1345592609.

It is not a weakly prime, because it can be changed into another prime (1345592629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672796304 + 672796305.

It is an arithmetic number, because the mean of its divisors is an integer number (672796305).

Almost surely, 2^1345592609 is an apocalyptic number.

It is an amenable number.

1345592609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345592609 is an equidigital number, since it uses as much as digits as its factorization.

1345592609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 1345592609 is about 36682.3201147365. The cubic root of 1345592609 is about 1104.0054000230.

The spelling of 1345592609 in words is "one billion, three hundred forty-five million, five hundred ninety-two thousand, six hundred nine".