4381165 has 4 divisors (see below), whose sum is σ = 5257404. Its totient is φ = 3504928.

The previous prime is 4381159. The next prime is 4381177. The reversal of 4381165 is 5611834.

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 2709316 + 1671849 = 1646^2 + 1293^2 .

It is a cyclic number.

It is not a de Polignac number, because 4381165 - 2¹⁹ = 3856877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438112 + ... + 438121.

It is an arithmetic number, because the mean of its divisors is an integer number (1314351).

Almost surely, 2^4381165 is an apocalyptic number.

It is an amenable number.

4381165 is a deficient number, since it is larger than the sum of its proper divisors (876239).

4381165 is an equidigital number, since it uses as much as digits as its factorization.

4381165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876238.

The product of its digits is 2880, while the sum is 28.

The square root of 4381165 is about 2093.1232644066. The cubic root of 4381165 is about 163.6301027814.

Adding to 4381165 its reverse (5611834), we get a palindrome (9992999).

The spelling of 4381165 in words is "four million, three hundred eighty-one thousand, one hundred sixty-five".