11638903 has 2 divisors, whose sum is σ = 11638904. Its totient is φ = 11638902.

The previous prime is 11638877. The next prime is 11638951. The reversal of 11638903 is 30983611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11638903 - 2¹⁷ = 11507831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11638973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819451 + 5819452.

It is an arithmetic number, because the mean of its divisors is an integer number (5819452).

Almost surely, 2^11638903 is an apocalyptic number.

11638903 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638903 is an equidigital number, since it uses as much as digits as its factorization.

11638903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 11638903 is about 3411.5836498612. The cubic root of 11638903 is about 226.6230166331.

The spelling of 11638903 in words is "eleven million, six hundred thirty-eight thousand, nine hundred three".