18045843 has 8 divisors (see below), whose sum is σ = 24098256. Its totient is φ = 12012000.

The previous prime is 18045827. The next prime is 18045851. The reversal of 18045843 is 34854081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18045843 - 2⁴ = 18045827 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18045343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2188 + ... + 6393.

It is an arithmetic number, because the mean of its divisors is an integer number (3012282).

Almost surely, 2^18045843 is an apocalyptic number.

18045843 is a deficient number, since it is larger than the sum of its proper divisors (6052413).

18045843 is an equidigital number, since it uses as much as digits as its factorization.

18045843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9285.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 18045843 is about 4248.0399009426. The cubic root of 18045843 is about 262.2964371938.

The spelling of 18045843 in words is "eighteen million, forty-five thousand, eight hundred forty-three".