1263641132 has 48 divisors (see below), whose sum is σ = 2521649760. Its totient is φ = 549255168.

The previous prime is 1263641123. The next prime is 1263641143. The reversal of 1263641132 is 2311463621.

It is a junction number, because it is equal to n+sod(n) for n = 1263641095 and 1263641104.

It is an unprimeable number.

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, 167228 + ... + 174620.

It is an arithmetic number, because the mean of its divisors is an integer number (52534370).

Almost surely, 2^1263641132 is an apocalyptic number.

It is an amenable number.

1263641132 is a deficient number, since it is larger than the sum of its proper divisors (1258008628).

1263641132 is a wasteful number, since it uses less digits than its factorization.

1263641132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602 (or 7600 counting only the distinct ones).

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

The square root of 1263641132 is about 35547.7303354237. The cubic root of 1263641132 is about 1081.1217003837.

The spelling of 1263641132 in words is "one billion, two hundred sixty-three million, six hundred forty-one thousand, one hundred thirty-two".