1165843 has 16 divisors (see below), whose sum is σ = 1439424. Its totient is φ = 921600.

The previous prime is 1165837. The next prime is 1165849. The reversal of 1165843 is 3485611.

It is an interprime number because it is at equal distance from previous prime (1165837) and next prime (1165849).

It is a cyclic number.

It is not a de Polignac number, because 1165843 - 2¹⁷ = 1034771 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 11493 + ... + 11593.

It is an arithmetic number, because the mean of its divisors is an integer number (89964).

2^1165843 is an apocalyptic number.

1165843 is a deficient number, since it is larger than the sum of its proper divisors (273581).

1165843 is a wasteful number, since it uses less digits than its factorization.

1165843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222.

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

The square root of 1165843 is about 1079.7420988366. The cubic root of 1165843 is about 105.2478799625.

The spelling of 1165843 in words is "one million, one hundred sixty-five thousand, eight hundred forty-three".