18122103 has 8 divisors (see below), whose sum is σ = 26847600. Its totient is φ = 12081384.

The previous prime is 18122101. The next prime is 18122107. The reversal of 18122103 is 30122181.

It is not a de Polignac number, because 18122103 - 2¹ = 18122101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18122101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335568 + ... + 335621.

It is an arithmetic number, because the mean of its divisors is an integer number (3355950).

Almost surely, 2^18122103 is an apocalyptic number.

18122103 is a deficient number, since it is larger than the sum of its proper divisors (8725497).

18122103 is an equidigital number, since it uses as much as digits as its factorization.

18122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671198 (or 671192 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 18122103 is about 4257.0063424900. The cubic root of 18122103 is about 262.6653978039.

Adding to 18122103 its reverse (30122181), we get a palindrome (48244284).

It can be divided in two parts, 18122 and 103, that added together give a square (18225 = 135²).

The spelling of 18122103 in words is "eighteen million, one hundred twenty-two thousand, one hundred three".