1320389207 has 2 divisors, whose sum is σ = 1320389208. Its totient is φ = 1320389206.

The previous prime is 1320389153. The next prime is 1320389219. The reversal of 1320389207 is 7029830231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320389207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320389407) 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, 660194603 + 660194604.

It is an arithmetic number, because the mean of its divisors is an integer number (660194604).

Almost surely, 2^1320389207 is an apocalyptic number.

1320389207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320389207 is an equidigital number, since it uses as much as digits as its factorization.

1320389207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1320389207 is about 36337.1601394495. The cubic root of 1320389207 is about 1097.0691142909.

The spelling of 1320389207 in words is "one billion, three hundred twenty million, three hundred eighty-nine thousand, two hundred seven".