18056343 has 4 divisors (see below), whose sum is σ = 24075128. Its totient is φ = 12037560.

The previous prime is 18056341. The next prime is 18056347. The reversal of 18056343 is 34365081.

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

It is not a de Polignac number, because 18056343 - 2¹ = 18056341 is a prime.

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 18056343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18056341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3009388 + ... + 3009393.

It is an arithmetic number, because the mean of its divisors is an integer number (6018782).

Almost surely, 2^18056343 is an apocalyptic number.

18056343 is a deficient number, since it is larger than the sum of its proper divisors (6018785).

18056343 is an equidigital number, since it uses as much as digits as its factorization.

18056343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018784.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 18056343 is about 4249.2755853204. The cubic root of 18056343 is about 262.3472998514.

The spelling of 18056343 in words is "eighteen million, fifty-six thousand, three hundred forty-three".