165945349 has 2 divisors, whose sum is σ = 165945350. Its totient is φ = 165945348.

The previous prime is 165945343. The next prime is 165945397. The reversal of 165945349 is 943549561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144720900 + 21224449 = 12030^2 + 4607^2 .

It is a cyclic number.

It is not a de Polignac number, because 165945349 - 2⁵ = 165945317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165945299 and 165945308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165945343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82972674 + 82972675.

It is an arithmetic number, because the mean of its divisors is an integer number (82972675).

Almost surely, 2^165945349 is an apocalyptic number.

It is an amenable number.

165945349 is a deficient number, since it is larger than the sum of its proper divisors (1).

165945349 is an equidigital number, since it uses as much as digits as its factorization.

165945349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 165945349 is about 12881.9776820176. The cubic root of 165945349 is about 549.5261472411.

The spelling of 165945349 in words is "one hundred sixty-five million, nine hundred forty-five thousand, three hundred forty-nine".