1263853712 has 80 divisors (see below), whose sum is σ = 2852656704. Its totient is φ = 540531200.

The previous prime is 1263853711. The next prime is 1263853739. The reversal of 1263853712 is 2173583621.

It is not an unprimeable number, because it can be changed into a prime (1263853711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360287 + ... + 363777.

Almost surely, 2^1263853712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263853712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426328352).

1263853712 is an abundant number, since it is smaller than the sum of its proper divisors (1588802992).

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

1263853712 is a wasteful number, since it uses less digits than its factorization.

1263853712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549 (or 3521 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 1263853712 is about 35550.7202739973. The cubic root of 1263853712 is about 1081.1823220161.

The spelling of 1263853712 in words is "one billion, two hundred sixty-three million, eight hundred fifty-three thousand, seven hundred twelve".