1163165 has 4 divisors (see below), whose sum is σ = 1395804. Its totient is φ = 930528.

The previous prime is 1163159. The next prime is 1163167. The reversal of 1163165 is 5613611.

It is a happy number.

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 190969 + 972196 = 437^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163165 - 2¹⁴ = 1146781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1163165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163167) 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, 116312 + ... + 116321.

It is an arithmetic number, because the mean of its divisors is an integer number (348951).

2^1163165 is an apocalyptic number.

It is an amenable number.

1163165 is a deficient number, since it is larger than the sum of its proper divisors (232639).

1163165 is an equidigital number, since it uses as much as digits as its factorization.

1163165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232638.

The product of its digits is 540, while the sum is 23.

The square root of 1163165 is about 1078.5012749181. The cubic root of 1163165 is about 105.1672316221.

Adding to 1163165 its reverse (5613611), we get a palindrome (6776776).

The spelling of 1163165 in words is "one million, one hundred sixty-three thousand, one hundred sixty-five".