phpjs/functions/network/long2ip.js

php.js offers community built php functions in javascript

function long2ip(ip) {
  // From: http://phpjs.org/functions
  // +   original by: Waldo Malqui Silva
  // *     example 1: long2ip( 3221234342 );
  // *     returns 1: '192.0.34.166'
  if (!isFinite(ip))
    return false;

  return [ip >>> 24, ip >>> 16 & 0xFF, ip >>> 8 & 0xFF, ip & 0xFF].join('.');
}