1263964003 has 2 divisors, whose sum is σ = 1263964004. Its totient is φ = 1263964002.

The previous prime is 1263963989. The next prime is 1263964007. The reversal of 1263964003 is 3004693621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263964003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1263964003.

It is not a weakly prime, because it can be changed into another prime (1263964007) 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, 631982001 + 631982002.

It is an arithmetic number, because the mean of its divisors is an integer number (631982002).

Almost surely, 2^1263964003 is an apocalyptic number.

1263964003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263964003 is an equidigital number, since it uses as much as digits as its factorization.

1263964003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 1263964003 is about 35552.2714182934. The cubic root of 1263964003 is about 1081.2137711229.

The spelling of 1263964003 in words is "one billion, two hundred sixty-three million, nine hundred sixty-four thousand, three".