18836105 has 4 divisors (see below), whose sum is σ = 22603332. Its totient is φ = 15068880.

The previous prime is 18836101. The next prime is 18836113. The reversal of 18836105 is 50163881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50163881 = 29 ⋅1729789.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 13564489 = 2296^2 + 3683^2 .

It is not a de Polignac number, because 18836105 - 2² = 18836101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18836101) 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 3 ways as a sum of consecutive naturals, for example, 1883606 + ... + 1883615.

It is an arithmetic number, because the mean of its divisors is an integer number (5650833).

Almost surely, 2^18836105 is an apocalyptic number.

It is an amenable number.

18836105 is a deficient number, since it is larger than the sum of its proper divisors (3767227).

18836105 is an equidigital number, since it uses as much as digits as its factorization.

18836105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767226.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 18836105 is about 4340.0581793335. The cubic root of 18836105 is about 266.0706889974.

Adding to 18836105 its reverse (50163881), we get a palindrome (68999986).

The spelling of 18836105 in words is "eighteen million, eight hundred thirty-six thousand, one hundred five".