165441489 has 8 divisors (see below), whose sum is σ = 222050112. Its totient is φ = 109563600.

The previous prime is 165441481. The next prime is 165441499. The reversal of 165441489 is 984144561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165441489 - 2³ = 165441481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165441489.

It is not an unprimeable number, because it can be changed into a prime (165441481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182154 + ... + 183059.

It is an arithmetic number, because the mean of its divisors is an integer number (27756264).

Almost surely, 2^165441489 is an apocalyptic number.

It is an amenable number.

165441489 is a deficient number, since it is larger than the sum of its proper divisors (56608623).

165441489 is a wasteful number, since it uses less digits than its factorization.

165441489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365367.

The product of its digits is 138240, while the sum is 42.

The square root of 165441489 is about 12862.4060346422. The cubic root of 165441489 is about 548.9694078195.

The spelling of 165441489 in words is "one hundred sixty-five million, four hundred forty-one thousand, four hundred eighty-nine".