y[y0_,xc_,w_,A_,x_]:=y0+(A/(w(Sqrt[(Pi/2)])))(E^(-2 ((((x-xc))^2)/(w^2))))

Plot[y[0.01095,-4.9318 10 10^-6,16350976.74667,202069748.14,x],{x,-(10^9),(10^9)}]