1263494312 has 32 divisors (see below), whose sum is σ = 2392303680. Its totient is φ = 625574400.

The previous prime is 1263494273. The next prime is 1263494329. The reversal of 1263494312 is 2134943621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424943 + ... + 427905.

It is an arithmetic number, because the mean of its divisors is an integer number (74759490).

Almost surely, 2^1263494312 is an apocalyptic number.

It is an amenable number.

1263494312 is a deficient number, since it is larger than the sum of its proper divisors (1128809368).

1263494312 is a wasteful number, since it uses less digits than its factorization.

1263494312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473 (or 3469 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 1263494312 is about 35545.6651646864. The cubic root of 1263494312 is about 1081.0798276209.

The spelling of 1263494312 in words is "one billion, two hundred sixty-three million, four hundred ninety-four thousand, three hundred twelve".