JSFiddle - React, Tailwind, and code Playground

JavaScript

var n = "1.94524444444444443e+5";

function bigNumberToString(n) {
    var str = typeof(n) == "string" ? n : n.toString();
       
    if (str.match(/(\d)\.*(\d*)e\+(\d+)/)) {
        //    document.write(RegExp.$1, RegExp.$2, RegExp.$3); 
        str = RegExp.$1 + RegExp.$2 + new Array(RegExp.$3 - (RegExp.$2).length + 1).join('0');
    }
    return str;
}
var n = "1234567891234567891234567890";
document.write(n+'<br>');
n = parseInt(n,10);
document.write(bigNumberToString(n));