165343289 has 2 divisors, whose sum is σ = 165343290. Its totient is φ = 165343288.

The previous prime is 165343279. The next prime is 165343327. The reversal of 165343289 is 982343561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122832889 + 42510400 = 11083^2 + 6520^2 .

It is a cyclic number.

It is not a de Polignac number, because 165343289 - 2⁴ = 165343273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165343219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82671644 + 82671645.

It is an arithmetic number, because the mean of its divisors is an integer number (82671645).

Almost surely, 2^165343289 is an apocalyptic number.

It is an amenable number.

165343289 is a deficient number, since it is larger than the sum of its proper divisors (1).

165343289 is an equidigital number, since it uses as much as digits as its factorization.

165343289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 165343289 is about 12858.5881417829. The cubic root of 165343289 is about 548.8607702869.

The spelling of 165343289 in words is "one hundred sixty-five million, three hundred forty-three thousand, two hundred eighty-nine".