165065449 has 2 divisors, whose sum is σ = 165065450. Its totient is φ = 165065448.

The previous prime is 165065441. The next prime is 165065489. The reversal of 165065449 is 944560561.

It is a happy number.

It is an a-pointer prime, because the next prime (165065489) can be obtained adding 165065449 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163840000 + 1225449 = 12800^2 + 1107^2 .

It is a cyclic number.

It is not a de Polignac number, because 165065449 - 2³ = 165065441 is a prime.

It is not a weakly prime, because it can be changed into another prime (165065441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82532724 + 82532725.

It is an arithmetic number, because the mean of its divisors is an integer number (82532725).

Almost surely, 2^165065449 is an apocalyptic number.

It is an amenable number.

165065449 is a deficient number, since it is larger than the sum of its proper divisors (1).

165065449 is an equidigital number, since it uses as much as digits as its factorization.

165065449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 165065449 is about 12847.7799249520. The cubic root of 165065449 is about 548.5531658798.

The spelling of 165065449 in words is "one hundred sixty-five million, sixty-five thousand, four hundred forty-nine".