18036036 has 18 divisors (see below), whose sum is σ = 45591182. Its totient is φ = 6012000.

The previous prime is 18036013. The next prime is 18036047. The reversal of 18036036 is 63063081.

It can be written as a sum of positive squares in only one way, i.e., 9036036 + 9000000 = 3006^2 + 3000^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250465 + ... + 250536.

Almost surely, 2^18036036 is an apocalyptic number.

It is an amenable number.

18036036 is an abundant number, since it is smaller than the sum of its proper divisors (27555146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18036036 is a wasteful number, since it uses less digits than its factorization.

18036036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501011 (or 501006 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 18036036 is about 4246.8854470070. The cubic root of 18036036 is about 262.2489136491.

The spelling of 18036036 in words is "eighteen million, thirty-six thousand, thirty-six".