Il numero romano MMDCXXXVIII nel sistema decimale vale: 2638.
MMDCXXXVIII in latino si scrive duo milia sescenti triginta octo,
mentre in italiano duemilaseicentotrentotto.
MMDCXIX, MMDCXX, MMDCXXI, MMDCXXII, MMDCXXIII, MMDCXXIV, MMDCXXV, MMDCXXVI, MMDCXXVII, MMDCXXVIII, MMDCXXIX, MMDCXXX, MMDCXXXI, MMDCXXXII, MMDCXXXIII, MMDCXXXIV, MMDCXXXV, MMDCXXXVI, MMDCXXXVII, MMDCXXXIX, MMDCXL, MMDCXLI, MMDCXLII, MMDCXLIII, MMDCXLIV, MMDCXLV, MMDCXLVI, MMDCXLVII, MMDCXLVIII, MMDCXLIX, MMDCL, MMDCLI, MMDCLII, MMDCLIII, MMDCLIV, MMDCLV, MMDCLVI, MMDCLVII