1263429448 has 8 divisors (see below), whose sum is σ = 2368930230. Its totient is φ = 631714720.

The previous prime is 1263429439. The next prime is 1263429449. The reversal of 1263429448 is 8449243621.

It can be written as a sum of positive squares in only one way, i.e., 988599364 + 274830084 = 31442^2 + 16578^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1263429449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78964333 + ... + 78964348.

Almost surely, 2^1263429448 is an apocalyptic number.

It is an amenable number.

1263429448 is a deficient number, since it is larger than the sum of its proper divisors (1105500782).

1263429448 is a wasteful number, since it uses less digits than its factorization.

1263429448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157928687 (or 157928683 counting only the distinct ones).

The product of its digits is 331776, while the sum is 43.

The square root of 1263429448 is about 35544.7527491752. The cubic root of 1263429448 is about 1081.0613275081.

The spelling of 1263429448 in words is "one billion, two hundred sixty-three million, four hundred twenty-nine thousand, four hundred forty-eight".