It is an unprimeable number.
Almost surely, 21263223752 is an apocalyptic number.
1263223752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1263223752 is a wasteful number, since it uses less digits than its factorization.
1263223752 is an evil number, because the sum of its binary digits is even.
The square root of 1263223752 is about 35541.8591522728. The cubic root of 1263223752 is about 1081.0026559666.
The spelling of 1263223752 in words is "one billion, two hundred sixty-three million, two hundred twenty-three thousand, seven hundred fifty-two".