18036201 has 24 divisors (see below), whose sum is σ = 25994304. Its totient is φ = 11119360.

The previous prime is 18036169. The next prime is 18036229. The reversal of 18036201 is 10263081.

It is not a de Polignac number, because 18036201 - 2⁵ = 18036169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18036101) 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 in 23 ways as a sum of consecutive naturals, for example, 61411 + ... + 61703.

It is an arithmetic number, because the mean of its divisors is an integer number (1083096).

Almost surely, 2^18036201 is an apocalyptic number.

It is an amenable number.

18036201 is a deficient number, since it is larger than the sum of its proper divisors (7958103).

18036201 is a wasteful number, since it uses less digits than its factorization.

18036201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 18036201 is about 4246.9048729634. The cubic root of 18036201 is about 262.2497133618.

Adding to 18036201 its reverse (10263081), we get a palindrome (28299282).

The spelling of 18036201 in words is "eighteen million, thirty-six thousand, two hundred one".