320169149 has 2 divisors, whose sum is σ = 320169150. Its totient is φ = 320169148.

The previous prime is 320169119. The next prime is 320169163. The reversal of 320169149 is 941961023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319765924 + 403225 = 17882^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 320169149 - 2²⁰ = 319120573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320169119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160084574 + 160084575.

It is an arithmetic number, because the mean of its divisors is an integer number (160084575).

Almost surely, 2^320169149 is an apocalyptic number.

It is an amenable number.

320169149 is a deficient number, since it is larger than the sum of its proper divisors (1).

320169149 is an equidigital number, since it uses as much as digits as its factorization.

320169149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 320169149 is about 17893.2710536671. The cubic root of 320169149 is about 684.1108744095.

The spelling of 320169149 in words is "three hundred twenty million, one hundred sixty-nine thousand, one hundred forty-nine".