1263632432 has 10 divisors (see below), whose sum is σ = 2448287868. Its totient is φ = 631816208.

The previous prime is 1263632431. The next prime is 1263632453. The reversal of 1263632432 is 2342363621.

It is not an unprimeable number, because it can be changed into a prime (1263632431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39488498 + ... + 39488529.

Almost surely, 2^1263632432 is an apocalyptic number.

It is an amenable number.

1263632432 is a deficient number, since it is larger than the sum of its proper divisors (1184655436).

1263632432 is an equidigital number, since it uses as much as digits as its factorization.

1263632432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78977035 (or 78977029 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The square root of 1263632432 is about 35547.6079645312. The cubic root of 1263632432 is about 1081.1192192519.

The spelling of 1263632432 in words is "one billion, two hundred sixty-three million, six hundred thirty-two thousand, four hundred thirty-two".