<page_title> Islam by country </page_title> <section_title> By continent </section_title> <table> <cell> 1,800,000,000 <col_header> Muslims </col_header> </cell> <cell> 24.1 <col_header> Muslim percentage (%) of total population </col_header> </cell> </table>
Islam has 1.8 billion adherents, making up 24.1% of the world population.