1263494329 has 2 divisors, whose sum is σ = 1263494330. Its totient is φ = 1263494328.

The previous prime is 1263494273. The next prime is 1263494339. The reversal of 1263494329 is 9234943621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 825010729 + 438483600 = 28723^2 + 20940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263494329 - 2¹³ = 1263486137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263494339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631747164 + 631747165.

It is an arithmetic number, because the mean of its divisors is an integer number (631747165).

Almost surely, 2^1263494329 is an apocalyptic number.

It is an amenable number.

1263494329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263494329 is an equidigital number, since it uses as much as digits as its factorization.

1263494329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 1263494329 is about 35545.6654038154. The cubic root of 1263494329 is about 1081.0798324695.

The spelling of 1263494329 in words is "one billion, two hundred sixty-three million, four hundred ninety-four thousand, three hundred twenty-nine".