At 184 centimeters, you’re approximately 6 feet and 0.44 inches tall.
Since 0.44 inches is less than half an inch, it’s common to round down and refer to your height as 6 feet.
Claiming to be 6’1″ would be an overstatement, as that equals 185.42 centimeters.
For accuracy, it’s best to state your height as 6 feet or 6 feet and half an inch.