integers.info

Binary:	10000000000000000000
Octal:	2000000
Hex:	80000
:

2¹⁹

1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144 and 524288

No.

Its nearest Fibonacci number neighbors are 514229 and 832040.