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Its seven-week run tied the record set by Iggy Azalea in 2014 with "Fancy" for the longest-running number-one by a female rapper.
This website contains every Billboard Hot 100 single released from 1955 to present day.
In total, seventeen acts topped the chart as either lead or featured artists, with ten—Swae Lee, Bradley Cooper, Jonas Brothers, Lil Nas X, Billy Ray Cyrus, Billie Eilish, Shawn Mendes, Lizzo, Lewis Capaldi, and Selena Gomez—achieving their first Hot 100 number-one single.
Lil Nas X's "Old Town Road" featuring Billy Ray Cyrus was the longest-running number-one of the year, leading the chart for a record-breaking nineteen weeks, surpassing the previous record of sixteen weeks achieved by both "One Sweet Day", by Mariah Carey and Boyz II Men (1995–96), and "Despacito", by Luis Fonsi and Daddy Yankee featuring Justin Bieber; it subsequently topped the Billboard Year-End Hot 100.
Post Malone and Ariana Grande were the only acts to have multiple number one songs in 2019, with two.
Despite being released in 2017, "Truth Hurts" became Lizzo's (pictured) first number-one hit and first Hot 100 chart entry in general.
This is with the exception of any single that only made it under the Hot 100 (commonly known as a “Bubbling Under”).
It later ranked as the best-performing single of the year.
All abbreviations, or usage of contractions, etc., are due to how the song was originally released.