1006503263 has 2 divisors, whose sum is σ = 1006503264. Its totient is φ = 1006503262.

The previous prime is 1006503191. The next prime is 1006503269. The reversal of 1006503263 is 3623056001.

It is a strong prime.

It is an emirp because it is prime and its reverse (3623056001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1006503263 - 2¹⁶ = 1006437727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006503269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503251631 + 503251632.

It is an arithmetic number, because the mean of its divisors is an integer number (503251632).

Almost surely, 2^1006503263 is an apocalyptic number.

1006503263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006503263 is an equidigital number, since it uses as much as digits as its factorization.

1006503263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1006503263 is about 31725.4355840862. The cubic root of 1006503263 is about 1002.1630720789.

Adding to 1006503263 its reverse (3623056001), we get a palindrome (4629559264).

The spelling of 1006503263 in words is "one billion, six million, five hundred three thousand, two hundred sixty-three".