1330423609 has 2 divisors, whose sum is σ = 1330423610. Its totient is φ = 1330423608.

The previous prime is 1330423607. The next prime is 1330423639. The reversal of 1330423609 is 9063240331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 825297984 + 505125625 = 28728^2 + 22475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330423609 - 2¹ = 1330423607 is a prime.

Together with 1330423607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1330423607) 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, 665211804 + 665211805.

It is an arithmetic number, because the mean of its divisors is an integer number (665211805).

Almost surely, 2^1330423609 is an apocalyptic number.

It is an amenable number.

1330423609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330423609 is an equidigital number, since it uses as much as digits as its factorization.

1330423609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1330423609 is about 36474.9723646228. The cubic root of 1330423609 is about 1099.8411916743.

The spelling of 1330423609 in words is "one billion, three hundred thirty million, four hundred twenty-three thousand, six hundred nine".