165302449 has 27 divisors (see below), whose sum is σ = 191569707. Its totient is φ = 142558416.

The previous prime is 165302443. The next prime is 165302461. The reversal of 165302449 is 944203561.

It is a happy number.

The square root of 165302449 is 12857.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24453025 + 140849424 = 4945^2 + 11868^2 .

It is not a de Polignac number, because 165302449 - 2¹⁵ = 165269681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165302443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3844222 + ... + 3844264.

Almost surely, 2^165302449 is an apocalyptic number.

165302449 is the 12857-th square number.

165302449 is the 6429-th centered octagonal number.

It is an amenable number.

165302449 is a deficient number, since it is larger than the sum of its proper divisors (26267258).

165302449 is an equidigital number, since it uses as much as digits as its factorization.

165302449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The cubic root of 165302449 is about 548.8155767993.

The spelling of 165302449 in words is "one hundred sixty-five million, three hundred two thousand, four hundred forty-nine".