1165056443 has 4 divisors (see below), whose sum is σ = 1165205160. Its totient is φ = 1164907728.

The previous prime is 1165056433. The next prime is 1165056457. The reversal of 1165056443 is 3446505611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3446505611 = 461 ⋅7476151.

It is a cyclic number.

It is not a de Polignac number, because 1165056443 - 2⁸ = 1165056187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165056433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61913 + ... + 78506.

It is an arithmetic number, because the mean of its divisors is an integer number (291301290).

Almost surely, 2^1165056443 is an apocalyptic number.

1165056443 is a deficient number, since it is larger than the sum of its proper divisors (148717).

1165056443 is an equidigital number, since it uses as much as digits as its factorization.

1165056443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148716.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1165056443 is about 34132.9231534599. The cubic root of 1165056443 is about 1052.2420551095.

The spelling of 1165056443 in words is "one billion, one hundred sixty-five million, fifty-six thousand, four hundred forty-three".