18506105 has 16 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 14294592.

The previous prime is 18506087. The next prime is 18506153. The reversal of 18506105 is 50160581.

It is a cyclic number.

It is not a de Polignac number, because 18506105 - 2⁸ = 18505849 is a prime.

18506105 is a modest number, since divided by 6105 gives 1850 as remainder.

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, 30596 + ... + 31194.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^18506105 is an apocalyptic number.

It is an amenable number.

18506105 is a deficient number, since it is larger than the sum of its proper divisors (4476295).

18506105 is a wasteful number, since it uses less digits than its factorization.

18506105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 18506105 is about 4301.8722668159. The cubic root of 18506105 is about 264.5077130837.

Adding to 18506105 its reverse (50160581), we get a palindrome (68666686).

The spelling of 18506105 in words is "eighteen million, five hundred six thousand, one hundred five".