16903 has 2 divisors, whose sum is σ = 16904. Its totient is φ = 16902.

The previous prime is 16901. The next prime is 16921. The reversal of 16903 is 30961.

16903 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16903 - 2¹ = 16901 is a prime.

It is a super-2 number, since 2×16903² = 571422818, which contains 22 as substring.

Together with 16901, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8451 + 8452.

It is an arithmetic number, because the mean of its divisors is an integer number (8452).

2¹⁶⁹⁰³ is an apocalyptic number.

16903 is a deficient number, since it is larger than the sum of its proper divisors (1).

16903 is an equidigital number, since it uses as much as digits as its factorization.

16903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 16903 is about 130.0115379495. The cubic root of 16903 is about 25.6638178281.

It can be divided in two parts, 16 and 903, that added together give a palindrome (919).

The spelling of 16903 in words is "sixteen thousand, nine hundred three".