1329313309 has 8 divisors (see below), whose sum is σ = 1376619552. Its totient is φ = 1282752240.

The previous prime is 1329313303. The next prime is 1329313327. The reversal of 1329313309 is 9033139231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1329313309 - 2⁵ = 1329313277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329313303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182662 + ... + 189799.

It is an arithmetic number, because the mean of its divisors is an integer number (172077444).

Almost surely, 2^1329313309 is an apocalyptic number.

It is an amenable number.

1329313309 is a deficient number, since it is larger than the sum of its proper divisors (47306243).

1329313309 is an equidigital number, since it uses as much as digits as its factorization.

1329313309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372587.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 1329313309 is about 36459.7491626040. The cubic root of 1329313309 is about 1099.5351504186.

The spelling of 1329313309 in words is "one billion, three hundred twenty-nine million, three hundred thirteen thousand, three hundred nine".