  We present the results of the charge ratio ($R$) and polarization
($P^{\mu}_{0}$) measurements using the decay electron events collected from
2008 September to 2022 June by the Super-Kamiokande detector. Because of its
underground location and long operation, we performed high precision
measurements by accumulating cosmic-ray muons. We measured the muon charge
ratio to be $R=1.32 \pm 0.02$ $(\mathrm{stat.}{+}\mathrm{syst.})$ at
$E_{\mu}\cos \theta_{\mathrm{Zenith}}=0.7^{+0.3}_{-0.2}$ $\mathrm{TeV}$, where
$E_{\mu}$ is the muon energy and $\theta_{\mathrm{Zenith}}$ is the zenith angle
of incoming cosmic-ray muons. This result is consistent with the Honda flux
model while this suggests a tension with the $\pi K$ model of $1.9\sigma$. We
also measured the muon polarization at the production location to be
$P^{\mu}_{0}=0.52 \pm 0.02$ $(\mathrm{stat.}{+}\mathrm{syst.})$ at the muon
momentum of $0.9^{+0.6}_{-0.1}$ $\mathrm{TeV}/c$ at the surface of the
mountain; this also suggests a tension with the Honda flux model of
$1.5\sigma$. This is the most precise measurement ever to experimentally
determine the cosmic-ray muon polarization near $1~\mathrm{TeV}/c$. These
measurement results are useful to improve the atmospheric neutrino simulations.
