16103603 has 4 divisors (see below), whose sum is σ = 16138848. Its totient is φ = 16068360.

The previous prime is 16103579. The next prime is 16103609. The reversal of 16103603 is 30630161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16103603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16103609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16928 + ... + 17853.

It is an arithmetic number, because the mean of its divisors is an integer number (4034712).

Almost surely, 2^16103603 is an apocalyptic number.

16103603 is a deficient number, since it is larger than the sum of its proper divisors (35245).

16103603 is an equidigital number, since it uses as much as digits as its factorization.

16103603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35244.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 16103603 is about 4012.9294785730. The cubic root of 16103603 is about 252.5269219407.

Adding to 16103603 its reverse (30630161), we get a palindrome (46733764).

The spelling of 16103603 in words is "sixteen million, one hundred three thousand, six hundred three".