18068243 has 4 divisors (see below), whose sum is σ = 18085728. Its totient is φ = 18050760.

The previous prime is 18068233. The next prime is 18068251. The reversal of 18068243 is 34286081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34286081 = 953 ⋅35977.

It is a cyclic number.

It is not a de Polignac number, because 18068243 - 2⁴ = 18068227 is a prime.

It is a super-2 number, since 2×18068243² = 652922810214098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18068233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7088 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (4521432).

Almost surely, 2^18068243 is an apocalyptic number.

18068243 is a deficient number, since it is larger than the sum of its proper divisors (17485).

18068243 is a wasteful number, since it uses less digits than its factorization.

18068243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 18068243 is about 4250.6755933616. The cubic root of 18068243 is about 262.4049203652.

The spelling of 18068243 in words is "eighteen million, sixty-eight thousand, two hundred forty-three".