1263130636 has 12 divisors (see below), whose sum is σ = 2214088912. Its totient is φ = 630533808.

The previous prime is 1263130601. The next prime is 1263130639. The reversal of 1263130636 is 6360313621.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1263130598 and 1263130607.

It is not an unprimeable number, because it can be changed into a prime (1263130639) 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 3 ways as a sum of consecutive naturals, for example, 255120 + ... + 260023.

Almost surely, 2^1263130636 is an apocalyptic number.

It is an amenable number.

1263130636 is a deficient number, since it is larger than the sum of its proper divisors (950958276).

1263130636 is a wasteful number, since it uses less digits than its factorization.

1263130636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515760 (or 515758 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1263130636 is about 35540.5491797749. The cubic root of 1263130636 is about 1080.9760940013.

The spelling of 1263130636 in words is "one billion, two hundred sixty-three million, one hundred thirty thousand, six hundred thirty-six".