Very lucky person, with that money you could spend it all how you want but still if they don't handle it well it can go fast easily but with that amount I really don't think you can spend it fast but maybe you could invest it into something else maybe real estate?
I hope he is responsible enough to take care of his winnings I have seen so many people turning their lives miserable because they cannot handle big money, they live a life of luxury until they cannot keep up anymore, the winner should undergo courses on how to manage their finances and how to set up and handle business, this is important for those who just turn themselves into instant millionaire.
He should be very careful and learn wise spending of the $1B mega million jackpot because even a billion jackpot if not handled carefully and spending it wisely will be easily lost. I have known some of the lucky winners of lottery here in our country which won a hundred million but due to mishandling of their money and wealth they ended up broke and lost it all at once. That is why it is advisable that when win a huge amount of money its a must to have a financial advisor so that you may have your idea where would you put your money in case.