165489293 has 2 divisors, whose sum is σ = 165489294. Its totient is φ = 165489292.

The previous prime is 165489281. The next prime is 165489349. The reversal of 165489293 is 392984561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119290084 + 46199209 = 10922^2 + 6797^2 .

It is a cyclic number.

It is not a de Polignac number, because 165489293 - 2¹⁶ = 165423757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165489223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82744646 + 82744647.

It is an arithmetic number, because the mean of its divisors is an integer number (82744647).

Almost surely, 2^165489293 is an apocalyptic number.

It is an amenable number.

165489293 is a deficient number, since it is larger than the sum of its proper divisors (1).

165489293 is an equidigital number, since it uses as much as digits as its factorization.

165489293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 165489293 is about 12864.2641841654. The cubic root of 165489293 is about 549.0222772791.

The spelling of 165489293 in words is "one hundred sixty-five million, four hundred eighty-nine thousand, two hundred ninety-three".