18363103 has 8 divisors (see below), whose sum is σ = 20258640. Its totient is φ = 16505280.

The previous prime is 18363089. The next prime is 18363109. The reversal of 18363103 is 30136381.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18363103 - 2¹³ = 18354911 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 (18363109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8400 + ... + 10357.

It is an arithmetic number, because the mean of its divisors is an integer number (2532330).

Almost surely, 2^18363103 is an apocalyptic number.

18363103 is a deficient number, since it is larger than the sum of its proper divisors (1895537).

18363103 is a wasteful number, since it uses less digits than its factorization.

18363103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18857.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 18363103 is about 4285.2191309197. The cubic root of 18363103 is about 263.8246415429.

Adding to 18363103 its reverse (30136381), we get a palindrome (48499484).

The spelling of 18363103 in words is "eighteen million, three hundred sixty-three thousand, one hundred three".