Here are the 4 most important things you should do if you win the Powerball jackpot.

Your chances of winning tonight's $450 million Powerball jackpot are about 290 million to one...(ahem)...So when you DO win, here are the first four things you should do:

1. Sign the back of the ticket. That way no one can steal it and claim THEY won.  If you want to be extra careful, you can sign it before the drawing.

2. Resist the urge to tell everyone. Only tell the people you're closest to, and maybe not even them. The point is you don't want everyone you know hitting you up for money for the rest of your life.

3. Hire a money management team.  Meaning an estate planner, a financial planner, and an accountant. And you should do it before you even claim the money, because they'll explain why you take the lump sum instead of yearly payments.

4. Don't start buying stuff yet.  44% of lottery winners blow through their entire winnings within five years.  But that's mostly if you win something like a million bucks.  It's kind of hard to blow through $450 million.

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