That was fun, one small correction though, we would not weight 1890kg on the surface of the Sun, although the Sun's mass is much greater, the distance from the centre of mass to the surface, I'm way too lazy to do the math, so I'll take a stab in the dark and guess one would weigh around 1200kg, not nearly as bad :)
Of course there is no solid surface to the Sun and it's a little too warm there for most, so probably not that important how overweight we may seem, radiation will kill us long before gravity is a concern.
Oh and it's gonna blow up in 2 million years not five, so stop wasting time reading this, we need to colonise Mars or something.