165849 has 8 divisors (see below), whose sum is σ = 225120. Its totient is φ = 108576.

The previous prime is 165833. The next prime is 165857. The reversal of 165849 is 948561.

165849 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 165849 - 2⁴ = 165833 is a prime.

165849 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (165829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292 + ... + 645.

It is an arithmetic number, because the mean of its divisors is an integer number (28140).

2¹⁶⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

165849 is a deficient number, since it is larger than the sum of its proper divisors (59271).

165849 is an equidigital number, since it uses as much as digits as its factorization.

165849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

The product of its digits is 8640, while the sum is 33.

The square root of 165849 is about 407.2456261275. The cubic root of 165849 is about 54.9419773777.

The spelling of 165849 in words is "one hundred sixty-five thousand, eight hundred forty-nine".