844130165 has 4 divisors (see below), whose sum is σ = 1012956204. Its totient is φ = 675304128.

The previous prime is 844130149. The next prime is 844130167. The reversal of 844130165 is 561031448.

844130165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286320241 + 557809924 = 16921^2 + 23618^2 .

It is a cyclic number.

It is not a de Polignac number, because 844130165 - 2⁴ = 844130149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844130167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84413012 + ... + 84413021.

It is an arithmetic number, because the mean of its divisors is an integer number (253239051).

Almost surely, 2^844130165 is an apocalyptic number.

It is an amenable number.

844130165 is a deficient number, since it is larger than the sum of its proper divisors (168826039).

844130165 is a wasteful number, since it uses less digits than its factorization.

844130165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168826038.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 844130165 is about 29053.9182383375. The cubic root of 844130165 is about 945.0826854854.

The spelling of 844130165 in words is "eight hundred forty-four million, one hundred thirty thousand, one hundred sixty-five".