18140606 has 16 divisors (see below), whose sum is σ = 30976128. Its totient is φ = 7887000.

The previous prime is 18140599. The next prime is 18140609. The reversal of 18140606 is 60604181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17420 + ... + 18431.

It is an arithmetic number, because the mean of its divisors is an integer number (1936008).

Almost surely, 2^18140606 is an apocalyptic number.

18140606 is a deficient number, since it is larger than the sum of its proper divisors (12835522).

18140606 is a wasteful number, since it uses less digits than its factorization.

18140606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35887.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18140606 is about 4259.1790288740. The cubic root of 18140606 is about 262.7547627949.

Adding to 18140606 its reverse (60604181), we get a palindrome (78744787).

The spelling of 18140606 in words is "eighteen million, one hundred forty thousand, six hundred six".