1330423639 has 2 divisors, whose sum is σ = 1330423640. Its totient is φ = 1330423638.

The previous prime is 1330423609. The next prime is 1330423657. The reversal of 1330423639 is 9363240331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1330423639 - 2⁵ = 1330423607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330423609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665211819 + 665211820.

It is an arithmetic number, because the mean of its divisors is an integer number (665211820).

Almost surely, 2^1330423639 is an apocalyptic number.

1330423639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330423639 is an equidigital number, since it uses as much as digits as its factorization.

1330423639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 1330423639 is about 36474.9727758637. The cubic root of 1330423639 is about 1099.8411999412.

The spelling of 1330423639 in words is "one billion, three hundred thirty million, four hundred twenty-three thousand, six hundred thirty-nine".