320167489 has 2 divisors, whose sum is σ = 320167490. Its totient is φ = 320167488.

The previous prime is 320167481. The next prime is 320167501. The reversal of 320167489 is 984761023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228161025 + 92006464 = 15105^2 + 9592^2 .

It is a cyclic number.

It is not a de Polignac number, because 320167489 - 2³ = 320167481 is a prime.

It is not a weakly prime, because it can be changed into another prime (320167481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160083744 + 160083745.

It is an arithmetic number, because the mean of its divisors is an integer number (160083745).

Almost surely, 2^320167489 is an apocalyptic number.

It is an amenable number.

320167489 is a deficient number, since it is larger than the sum of its proper divisors (1).

320167489 is an equidigital number, since it uses as much as digits as its factorization.

320167489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 320167489 is about 17893.2246674544. The cubic root of 320167489 is about 684.1096920906.

The spelling of 320167489 in words is "three hundred twenty million, one hundred sixty-seven thousand, four hundred eighty-nine".