18808103 has 16 divisors (see below), whose sum is σ = 20839680. Its totient is φ = 16896000.

The previous prime is 18808093. The next prime is 18808117. The reversal of 18808103 is 30180881.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18808103 - 2⁸ = 18807847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18808133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46703 + ... + 47103.

It is an arithmetic number, because the mean of its divisors is an integer number (1302480).

Almost surely, 2^18808103 is an apocalyptic number.

18808103 is a deficient number, since it is larger than the sum of its proper divisors (2031577).

18808103 is a wasteful number, since it uses less digits than its factorization.

18808103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 18808103 is about 4336.8309858698. The cubic root of 18808103 is about 265.9387755525.

Adding to 18808103 its reverse (30180881), we get a palindrome (48988984).

The spelling of 18808103 in words is "eighteen million, eight hundred eight thousand, one hundred three".