Sunday's Oscars telecast that honored atomic bomb drama "Oppenheimer" reached a four-year high in viewership with an average audience of roughly 19.5 million on ABC, Reuters reports citing the Walt Disney-owned network.

The audience grew 4% from last year, when 18.8 million people watched the film industry's highest honors.

"Oppenheimer," the blockbuster biopic about the race to build the first atomic bomb, won seven awards on Sunday, including best picture.

On social media, the Oscars ranked as the No. 1 program on Sunday night, generating 28.5 million interactions, also roughly 4% above last year, ABC said.

The #Oscars hashtag was the top trending topic in the United States on X throughout the telecast, and the most-used hashtag on X worldwide on Sunday, the network added.

Jimmy Kimmel returned to host the ceremony, and the show earned generally positive reviews. The festivities started an hour earlier than usual, a move designed to capture more viewers.

Viewership of many awards ceremonies has dropped in recent years as audiences have ditched traditional television for streaming and social media.

The highest-rated Academy Awards telecast was in 1998, when megahit "Titanic" swept the honors. More than 57 million people tuned in that year.

In 2021, in the middle of the COVID-19 pandemic, Oscar ratings hit their low point with 10.5 million viewers.