1165841 has 4 divisors (see below), whose sum is σ = 1187892. Its totient is φ = 1143792.

The previous prime is 1165837. The next prime is 1165849. The reversal of 1165841 is 1485611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1485611 = 113 ⋅13147.

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 364816 = 895^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165841 - 2² = 1165837 is a prime.

It is an Ulam number.

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 1165841.

It is not an unprimeable number, because it can be changed into a prime (1165849) 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, 10946 + ... + 11051.

It is an arithmetic number, because the mean of its divisors is an integer number (296973).

2^1165841 is an apocalyptic number.

It is an amenable number.

1165841 is a deficient number, since it is larger than the sum of its proper divisors (22051).

1165841 is an equidigital number, since it uses as much as digits as its factorization.

1165841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22050.

The product of its digits is 960, while the sum is 26.

The square root of 1165841 is about 1079.7411726891. The cubic root of 1165841 is about 105.2478197783.

The spelling of 1165841 in words is "one million, one hundred sixty-five thousand, eight hundred forty-one".