1320670159 has 2 divisors, whose sum is σ = 1320670160. Its totient is φ = 1320670158.

The previous prime is 1320670123. The next prime is 1320670217. The reversal of 1320670159 is 9510760231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320670159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320370159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660335079 + 660335080.

It is an arithmetic number, because the mean of its divisors is an integer number (660335080).

Almost surely, 2^1320670159 is an apocalyptic number.

1320670159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320670159 is an equidigital number, since it uses as much as digits as its factorization.

1320670159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1320670159 is about 36341.0258385753. The cubic root of 1320670159 is about 1097.1469201130.

The spelling of 1320670159 in words is "one billion, three hundred twenty million, six hundred seventy thousand, one hundred fifty-nine".