Former President Barack Obama's A Promised Land sold more than 1.7 million copies in North America in its first week.
A Promised Land, the first of two planned volumes, was published on November 17 and sold nearly 890,000 copies just in its first day.
Among former White House residents, only Obama's wife Michelle approaches his popularity as a writer.
Her book Becoming, published in 2018, has sold more than 10 million copies worldwide and is currently in the top 20 on Amazon.com.
George W. Bush's Decision Points sold 775,000 copies its first week and Bill Clinton's My Life topped 1 million in eight days.