18065743 has 4 divisors (see below), whose sum is σ = 18075040. Its totient is φ = 18056448.

The previous prime is 18065717. The next prime is 18065759. The reversal of 18065743 is 34756081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34756081 = 1759 ⋅19759.

It is a cyclic number.

It is not a de Polignac number, because 18065743 - 2⁵ = 18065711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18065699 and 18065708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18062743) 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 3 ways as a sum of consecutive naturals, for example, 498 + ... + 6031.

It is an arithmetic number, because the mean of its divisors is an integer number (4518760).

Almost surely, 2^18065743 is an apocalyptic number.

18065743 is a deficient number, since it is larger than the sum of its proper divisors (9297).

18065743 is an equidigital number, since it uses as much as digits as its factorization.

18065743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9296.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 18065743 is about 4250.3815122880. The cubic root of 18065743 is about 262.3928173150.

The spelling of 18065743 in words is "eighteen million, sixty-five thousand, seven hundred forty-three".