1330429729 has 2 divisors, whose sum is σ = 1330429730. Its totient is φ = 1330429728.

The previous prime is 1330429721. The next prime is 1330429739. The reversal of 1330429729 is 9279240331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097928225 + 232501504 = 33135^2 + 15248^2 .

It is an emirp because it is prime and its reverse (9279240331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1330429729 - 2³ = 1330429721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1330429691 and 1330429700.

It is not a weakly prime, because it can be changed into another prime (1330429721) 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, 665214864 + 665214865.

It is an arithmetic number, because the mean of its divisors is an integer number (665214865).

Almost surely, 2^1330429729 is an apocalyptic number.

It is an amenable number.

1330429729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330429729 is an equidigital number, since it uses as much as digits as its factorization.

1330429729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1330429729 is about 36475.0562576674. The cubic root of 1330429729 is about 1099.8428781090.

The spelling of 1330429729 in words is "one billion, three hundred thirty million, four hundred twenty-nine thousand, seven hundred twenty-nine".