18085343 has 4 divisors (see below), whose sum is σ = 18136080. Its totient is φ = 18034608.

The previous prime is 18085289. The next prime is 18085351. The reversal of 18085343 is 34358081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18085343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18085373) 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, 24830 + ... + 25547.

It is an arithmetic number, because the mean of its divisors is an integer number (4534020).

Almost surely, 2^18085343 is an apocalyptic number.

18085343 is a deficient number, since it is larger than the sum of its proper divisors (50737).

18085343 is an equidigital number, since it uses as much as digits as its factorization.

18085343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50736.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18085343 is about 4252.6865626331. The cubic root of 18085343 is about 262.4876753095.

The spelling of 18085343 in words is "eighteen million, eighty-five thousand, three hundred forty-three".