165230449 has 2 divisors, whose sum is σ = 165230450. Its totient is φ = 165230448.

The previous prime is 165230423. The next prime is 165230453. The reversal of 165230449 is 944032561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163456225 + 1774224 = 12785^2 + 1332^2 .

It is a cyclic number.

It is not a de Polignac number, because 165230449 - 2⁹ = 165229937 is a prime.

It is a super-2 number, since 2×165230449² = 54602202553483202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165230489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82615224 + 82615225.

It is an arithmetic number, because the mean of its divisors is an integer number (82615225).

Almost surely, 2^165230449 is an apocalyptic number.

It is an amenable number.

165230449 is a deficient number, since it is larger than the sum of its proper divisors (1).

165230449 is an equidigital number, since it uses as much as digits as its factorization.

165230449 is an evil number, because the sum of its binary digits is even.

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

The square root of 165230449 is about 12854.1996639231. The cubic root of 165230449 is about 548.7358835658.

The spelling of 165230449 in words is "one hundred sixty-five million, two hundred thirty thousand, four hundred forty-nine".