Perfect Square
1921538976143098225 is a perfect square (1386195865 × 1386195865)
1921538976143098225 is a perfect square (1386195865 × 1386195865)
1921538976143098225 is odd
Previous odd number is 1921538976143098223
Next odd number is 1921538976143098227
1101010101010101011011000010010011111000100111100000101110001