165105365 has 8 divisors (see below), whose sum is σ = 198460800. Its totient is φ = 131861392.

The previous prime is 165105361. The next prime is 165105373. The reversal of 165105365 is 563501561.

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

It is a cyclic number.

It is not a de Polignac number, because 165105365 - 2² = 165105361 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165105361) 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, 24569 + ... + 30558.

It is an arithmetic number, because the mean of its divisors is an integer number (24807600).

Almost surely, 2^165105365 is an apocalyptic number.

It is an amenable number.

165105365 is a deficient number, since it is larger than the sum of its proper divisors (33355435).

165105365 is an equidigital number, since it uses as much as digits as its factorization.

165105365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55731.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 165105365 is about 12849.3332511847. Note that the first 3 decimals coincide. The cubic root of 165105365 is about 548.5973792177.

The spelling of 165105365 in words is "one hundred sixty-five million, one hundred five thousand, three hundred sixty-five".