Multiple titles, authors, and avatars by posts' id

Hi ya’ll

I have this custom fields:
featured_posts1
featured_posts2
featured_posts3
featured_posts4

the values will be the posts’ ID’s

I need to display the title, author name, and avatar
of each of these posts.

I know how to access the value itself:
<?php echo get_post_meta($post->ID, 'featured_posts1', true); ?>

question is how do I call the title avatar and author of a post by it’s id.

Thanks so much for help in advance!!!