Perfect Square
1815491923593490358009161 is a perfect square (1347401916131 × 1347401916131)
1815491923593490358009161 is a perfect square (1347401916131 × 1347401916131)
1815491923593490358009161 is odd
Previous odd number is 1815491923593490358009159
Next odd number is 1815491923593490358009163
110000000011100100000001110101110101100111101001001000010110100101111110101001001
5983881213747472212441307307265008549689128667423408068413969929981040281