0x41C64E6D

What does this number stands for? I've stumbled upon it during reverse engineering a simple encryption scheme.

The checksum is stupid too, because they do usual sum for even words, but a xor for uneven.
do
{
DWord = *PData;
if ( Count & 1 )
chksum += DWord;
else
chksum ^= DWord;
++Count;
++PData;
}
while ( Count < NumDWord );

what does xor solve? That feel when everyone but myself are retarded and use over-engineered solutions.