5318643503 has 2 divisors, whose sum is σ = 5318643504. Its totient is φ = 5318643502.

The previous prime is 5318643493. The next prime is 5318643509. The reversal of 5318643503 is 3053468135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5318643503 - 2¹⁰ = 5318642479 is a prime.

It is a super-2 number, since 2×5318643503² = 56575937424008222018, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5318643509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2659321751 + 2659321752.

It is an arithmetic number, because the mean of its divisors is an integer number (2659321752).

Almost surely, 2^5318643503 is an apocalyptic number.

5318643503 is a deficient number, since it is larger than the sum of its proper divisors (1).

5318643503 is an equidigital number, since it uses as much as digits as its factorization.

5318643503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 5318643503 is about 72929.0305913907. The cubic root of 5318643503 is about 1745.5553608723. Note that the first 3 decimals are identical.

The spelling of 5318643503 in words is "five billion, three hundred eighteen million, six hundred forty-three thousand, five hundred three".