1263561168 has 40 divisors (see below), whose sum is σ = 3270067488. Its totient is φ = 420429952.

The previous prime is 1263561163. The next prime is 1263561217. The reversal of 1263561168 is 8611653621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263561163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3646 + ... + 50402.

Almost surely, 2^1263561168 is an apocalyptic number.

It is an amenable number.

1263561168 is an abundant number, since it is smaller than the sum of its proper divisors (2006506320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263561168 is a wasteful number, since it uses less digits than its factorization.

1263561168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47331 (or 47325 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 1263561168 is about 35546.6055763416. The cubic root of 1263561168 is about 1081.0988952172.

The spelling of 1263561168 in words is "one billion, two hundred sixty-three million, five hundred sixty-one thousand, one hundred sixty-eight".