1330605639 has 12 divisors (see below), whose sum is σ = 2096712072. Its totient is φ = 806427600.

The previous prime is 1330605607. The next prime is 1330605643. The reversal of 1330605639 is 9365060331.

1330605639 is a `hidden beast` number, since 1 + 3 + 30 + 60 + 563 + 9 = 666.

It is not a de Polignac number, because 1330605639 - 2⁵ = 1330605607 is a prime.

It is a super-2 number, since 2×1330605639² = 3541022733077196642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330605539) 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 11 ways as a sum of consecutive naturals, for example, 6720132 + ... + 6720329.

It is an arithmetic number, because the mean of its divisors is an integer number (174726006).

Almost surely, 2^1330605639 is an apocalyptic number.

1330605639 is a deficient number, since it is larger than the sum of its proper divisors (766106433).

1330605639 is a wasteful number, since it uses less digits than its factorization.

1330605639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13440478 (or 13440475 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 36.

The square root of 1330605639 is about 36477.4675519011. The cubic root of 1330605639 is about 1099.8913498747.

The spelling of 1330605639 in words is "one billion, three hundred thirty million, six hundred five thousand, six hundred thirty-nine".