18091030103 has 4 divisors (see below), whose sum is σ = 18091302168. Its totient is φ = 18090758040.

The previous prime is 18091030093. The next prime is 18091030129. The reversal of 18091030103 is 30103019081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18091030103 - 2¹⁰ = 18091029079 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 (18091035103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37508 + ... + 193878.

It is an arithmetic number, because the mean of its divisors is an integer number (4522825542).

Almost surely, 2^18091030103 is an apocalyptic number.

18091030103 is a deficient number, since it is larger than the sum of its proper divisors (272065).

18091030103 is a wasteful number, since it uses less digits than its factorization.

18091030103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272064.

The product of its (nonzero) digits is 648, while the sum is 26.

Adding to 18091030103 its reverse (30103019081), we get a palindrome (48194049184).

The spelling of 18091030103 in words is "eighteen billion, ninety-one million, thirty thousand, one hundred three".