1264685503 has 2 divisors, whose sum is σ = 1264685504. Its totient is φ = 1264685502.

The previous prime is 1264685459. The next prime is 1264685509. The reversal of 1264685503 is 3055864621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264685503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264685509) 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, 632342751 + 632342752.

It is an arithmetic number, because the mean of its divisors is an integer number (632342752).

Almost surely, 2^1264685503 is an apocalyptic number.

1264685503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264685503 is an equidigital number, since it uses as much as digits as its factorization.

1264685503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 1264685503 is about 35562.4170016606. The cubic root of 1264685503 is about 1081.4194592988.

The spelling of 1264685503 in words is "one billion, two hundred sixty-four million, six hundred eighty-five thousand, five hundred three".