165442408 has 16 divisors (see below), whose sum is σ = 310388580. Its totient is φ = 82672128.

The previous prime is 165442379. The next prime is 165442423. The reversal of 165442408 is 804244561.

It can be written as a sum of positive squares in 2 ways, for example, as 165328164 + 114244 = 12858^2 + 338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11010 + ... + 21262.

Almost surely, 2^165442408 is an apocalyptic number.

It is an amenable number.

165442408 is a deficient number, since it is larger than the sum of its proper divisors (144946172).

165442408 is a wasteful number, since it uses less digits than its factorization.

165442408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12276 (or 12272 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 165442408 is about 12862.4417588575. The cubic root of 165442408 is about 548.9704242956.

Adding to 165442408 its reverse (804244561), we get a palindrome (969686969).

The spelling of 165442408 in words is "one hundred sixty-five million, four hundred forty-two thousand, four hundred eight".