18036205 has 16 divisors (see below), whose sum is σ = 24251904. Its totient is φ = 12761280.

The previous prime is 18036169. The next prime is 18036229. The reversal of 18036205 is 50263081.

It is a happy number.

It is not a de Polignac number, because 18036205 - 2⁷ = 18036077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18036205.

It is a congruent number.

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, 2397 + ... + 6466.

It is an arithmetic number, because the mean of its divisors is an integer number (1515744).

Almost surely, 2^18036205 is an apocalyptic number.

It is an amenable number.

18036205 is a deficient number, since it is larger than the sum of its proper divisors (6215699).

18036205 is a wasteful number, since it uses less digits than its factorization.

18036205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 18036205 is about 4246.9053438945. The cubic root of 18036205 is about 262.2497327487.

Adding to 18036205 its reverse (50263081), we get a palindrome (68299286).

It can be divided in two parts, 1803 and 6205, that added together give a palindrome (8008).

The spelling of 18036205 in words is "eighteen million, thirty-six thousand, two hundred five".