18690106 has 32 divisors (see below), whose sum is σ = 31026240. Its totient is φ = 8407296.

The previous prime is 18690097. The next prime is 18690107. The reversal of 18690106 is 60109681.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18690107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104325 + ... + 104503.

It is an arithmetic number, because the mean of its divisors is an integer number (969570).

Almost surely, 2^18690106 is an apocalyptic number.

18690106 is a deficient number, since it is larger than the sum of its proper divisors (12336134).

18690106 is a wasteful number, since it uses less digits than its factorization.

18690106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 18690106 is about 4323.2055236826. The cubic root of 18690106 is about 265.3814655715.

Adding to 18690106 its reverse (60109681), we get a palindrome (78799787).

The spelling of 18690106 in words is "eighteen million, six hundred ninety thousand, one hundred six".