using System;

public class Program

{

    public static void Main()

    {

        var startingValue = Convert.ToUInt32(1234567890);

        var startingValueBytes = BitConverter.GetBytes(startingValue);

        if (BitConverter.IsLittleEndian) Array.Reverse(startingValueBytes);

        var startingValueString = Convert.ToBase64String(startingValueBytes);

        Console.WriteLine(startingValueString);

        var endingValueBytes = Convert.FromBase64String(startingValueString);

        if (BitConverter.IsLittleEndian) Array.Reverse(endingValueBytes);

        var endingValue = BitConverter.ToUInt32(endingValueBytes);

        Console.WriteLine(endingValue);

    }

}