using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var mask = 1191180287;

        Decode(mask);

    }

    public static void Decode(long privs) {

        var epriv = (Privileges)privs;

        var privileges =

            Enum.GetValues(typeof(Privileges))

                .Cast<Privileges>()

                .Where(value => epriv.HasFlag(value))

                .OrderBy(p => p.ToString())

                .ToList();

        foreach (var p in privileges) {

            Console.WriteLine(privs.ToString() + ": " + p); 

        }

    }

}

​

[Flags] 

public enum Privileges : long {

    privAddDoc = 8,

    privAddItem = 16,

    privAddLink = 512,

    privAddNotes = 4096,

    privAddToFolder = 128,

    privCancelCheckOutDoc = 262144,

    privChangeClass = 67108864,

    privCheckInDoc = 65536,

    privCheckInOutDoc = 32768,

    privCheckOutDoc = 131072,

    privDelegate = 2048,

    privDelete = 4194304,

    privEditAnnotations = 1048576,

    privEditDoc = 2,

    privEditProperties = 1,

    privEmailDoc = 32,

    privExport = 64,

    privHold = 16777216,

    privIERRecordDeclare = 536870912,

    privMajorVersion = 134217728,

    privMinorVersion = 268435456,

    privModifyNotes = 1073741824,

    privModifyPermissions = 2147483648,

    privMoveToFolder = 33554432,

    privPrintDoc = 16384,

    privPrintNotes = 8192,

    privRemoveFromFolder = 256,

    privRemoveLink = 1024,

    privStartWorkflow = 8388608,

    privViewAnnotations = 524288,

    privViewDoc = 2097152,

    privViewNotes = 4

}