1339318609 has 2 divisors, whose sum is σ = 1339318610. Its totient is φ = 1339318608.

The previous prime is 1339318577. The next prime is 1339318649. The reversal of 1339318609 is 9068139331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209996225 + 129322384 = 34785^2 + 11372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1339318609 - 2⁵ = 1339318577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1339318649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669659304 + 669659305.

It is an arithmetic number, because the mean of its divisors is an integer number (669659305).

Almost surely, 2^1339318609 is an apocalyptic number.

It is an amenable number.

1339318609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339318609 is an equidigital number, since it uses as much as digits as its factorization.

1339318609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1339318609 is about 36596.7021601674. The cubic root of 1339318609 is about 1102.2868701878.

The spelling of 1339318609 in words is "one billion, three hundred thirty-nine million, three hundred eighteen thousand, six hundred nine".