18235106 has 4 divisors (see below), whose sum is σ = 27352662. Its totient is φ = 9117552.

The previous prime is 18235097. The next prime is 18235109. The reversal of 18235106 is 60153281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 1301881 = 4115^2 + 1141^2 .

It is not an unprimeable number, because it can be changed into a prime (18235109) 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 as a sum of consecutive naturals, namely, 4558775 + ... + 4558778.

Almost surely, 2^18235106 is an apocalyptic number.

18235106 is a deficient number, since it is larger than the sum of its proper divisors (9117556).

18235106 is an equidigital number, since it uses as much as digits as its factorization.

18235106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117555.

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

The square root of 18235106 is about 4270.2583060045. The cubic root of 18235106 is about 263.2102296292.

Adding to 18235106 its reverse (60153281), we get a palindrome (78388387).

The spelling of 18235106 in words is "eighteen million, two hundred thirty-five thousand, one hundred six".