The national broadcaster says that an average of 535,000 viewers saw the full mass from beginning to end.
There were another 300,000 streams of RTÉ's online platforms that attracted audiences in 159 different countries, including Iran, Papua New Guinea and Swaziland.
RTÉ also shared images of the visit with more than 75 broadcasters worldwide.
TV viewing data released today by Nielsen TAM show that more than 1.8 million viewers are attuned to RTÉ & # 39; s special live TV coverage of Pope Francis in Ireland over the weekend.
On average, 535,000 viewers visited the entire papal mass on RTÉ One television in the Republic of Ireland on Sunday.
The full program coverage anchored by Bryan Dobson reached an audience of 1.1 million viewers who had tuned in at a certain moment during the broadcast.
At RTÉ2, the Festival of Families concert in Croke Park on Saturday night, 379,000 viewers watched the entire four-hour program on average, with a peak of 570,000 viewers watching all at one stage.