18145118 has 8 divisors (see below), whose sum is σ = 27391512. Its totient is φ = 9014616.

The previous prime is 18145117. The next prime is 18145123. The reversal of 18145118 is 81154181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18145117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28580 + ... + 29207.

It is an arithmetic number, because the mean of its divisors is an integer number (3423939).

Almost surely, 2^18145118 is an apocalyptic number.

18145118 is a deficient number, since it is larger than the sum of its proper divisors (9246394).

18145118 is a wasteful number, since it uses less digits than its factorization.

18145118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57946.

The product of its digits is 1280, while the sum is 29.

The square root of 18145118 is about 4259.7086754847. The cubic root of 18145118 is about 262.7765454412.

Adding to 18145118 its reverse (81154181), we get a palindrome (99299299).

The spelling of 18145118 in words is "eighteen million, one hundred forty-five thousand, one hundred eighteen".