18036936 has 48 divisors (see below), whose sum is σ = 49592400. Its totient is φ = 5920992.

The previous prime is 18036929. The next prime is 18036937. The reversal of 18036936 is 63963081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18036936.

It is not an unprimeable number, because it can be changed into a prime (18036937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2955 + ... + 6693.

It is an arithmetic number, because the mean of its divisors is an integer number (1033175).

Almost surely, 2^18036936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18036936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24796200).

18036936 is an abundant number, since it is smaller than the sum of its proper divisors (31555464).

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

18036936 is a wasteful number, since it uses less digits than its factorization.

18036936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818 (or 3811 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 18036936 is about 4246.9914056894. The cubic root of 18036936 is about 262.2532756589.

The spelling of 18036936 in words is "eighteen million, thirty-six thousand, nine hundred thirty-six".