I would say "August eighteenth, twenty-fourteen" and "eleven thousand one hundred and fifty" This is just one opinion from someone living in the northeast corner of the United States. I'm very interested to hear what others say, as I'm sure there are a number of perfectly correct ways to say these!

The month-first convention is American. Still, it gets rid of those little words (the, of) without causing confusion. The rest of the English-speaking world typically puts the day first. I would read the date as "the eighteenth of August, two thousand and fourteen". I actually advise getting comfortable with both conventions. Don't just opt for the easier one; that'd be limiting yourself. For the number, say "eleven thousand, one hundred and fifty". Dropping the "and" is possible, but not as common as people make out.