1263134612 has 18 divisors (see below), whose sum is σ = 2348165022. Its totient is φ = 594415744.

The previous prime is 1263134603. The next prime is 1263134617. The reversal of 1263134612 is 2164313621.

It can be written as a sum of positive squares in 3 ways, for example, as 173870596 + 1089264016 = 13186^2 + 33004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263134617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 545183 + ... + 547494.

Almost surely, 2^1263134612 is an apocalyptic number.

It is an amenable number.

1263134612 is a deficient number, since it is larger than the sum of its proper divisors (1085030410).

1263134612 is a wasteful number, since it uses less digits than its factorization.

1263134612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092715 (or 1092696 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 1263134612 is about 35540.6051158390. The cubic root of 1263134612 is about 1080.9772282087.

The spelling of 1263134612 in words is "one billion, two hundred sixty-three million, one hundred thirty-four thousand, six hundred twelve".