1263563283 has 16 divisors (see below), whose sum is σ = 1731374240. Its totient is φ = 819092736.

The previous prime is 1263563281. The next prime is 1263563303. The reversal of 1263563283 is 3823653621.

It is not a de Polignac number, because 1263563283 - 2¹ = 1263563281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263563281) 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 15 ways as a sum of consecutive naturals, for example, 261453 + ... + 266241.

It is an arithmetic number, because the mean of its divisors is an integer number (108210890).

Almost surely, 2^1263563283 is an apocalyptic number.

1263563283 is a deficient number, since it is larger than the sum of its proper divisors (467810957).

1263563283 is a wasteful number, since it uses less digits than its factorization.

1263563283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206.

The product of its digits is 155520, while the sum is 39.

The square root of 1263563283 is about 35546.6353260052. The cubic root of 1263563283 is about 1081.0994984126.

The spelling of 1263563283 in words is "one billion, two hundred sixty-three million, five hundred sixty-three thousand, two hundred eighty-three".