1263453263 has 2 divisors, whose sum is σ = 1263453264. Its totient is φ = 1263453262.

The previous prime is 1263453239. The next prime is 1263453283. The reversal of 1263453263 is 3623543621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1263453263 - 2²⁶ = 1196344399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263453283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631726631 + 631726632.

It is an arithmetic number, because the mean of its divisors is an integer number (631726632).

Almost surely, 2^1263453263 is an apocalyptic number.

1263453263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263453263 is an equidigital number, since it uses as much as digits as its factorization.

1263453263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 35.

The square root of 1263453263 is about 35545.0877478169. The cubic root of 1263453263 is about 1081.0681199501.

Adding to 1263453263 its reverse (3623543621), we get a palindrome (4886996884).

The spelling of 1263453263 in words is "one billion, two hundred sixty-three million, four hundred fifty-three thousand, two hundred sixty-three".