18236105 has 16 divisors (see below), whose sum is σ = 23217600. Its totient is φ = 13711680.

The previous prime is 18236089. The next prime is 18236129. The reversal of 18236105 is 50163281.

It is not a de Polignac number, because 18236105 - 2⁴ = 18236089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12515 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (1451100).

Almost surely, 2^18236105 is an apocalyptic number.

It is an amenable number.

18236105 is a deficient number, since it is larger than the sum of its proper divisors (4981495).

18236105 is a wasteful number, since it uses less digits than its factorization.

18236105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 18236105 is about 4270.3752762491. The cubic root of 18236105 is about 263.2150361495.

Adding to 18236105 its reverse (50163281), we get a palindrome (68399386).

The spelling of 18236105 in words is "eighteen million, two hundred thirty-six thousand, one hundred five".