18663852 has 48 divisors (see below), whose sum is σ = 46323200. Its totient is φ = 5832000.

The previous prime is 18663851. The next prime is 18663857. The reversal of 18663852 is 25836681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18663852.

It is not an unprimeable number, because it can be changed into a prime (18663851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24477 + ... + 25227.

Almost surely, 2^18663852 is an apocalyptic number.

18663852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18663852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23161600).

18663852 is an abundant number, since it is smaller than the sum of its proper divisors (27659348).

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

18663852 is a wasteful number, since it uses less digits than its factorization.

18663852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 884 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 18663852 is about 4320.1680522869. The cubic root of 18663852 is about 265.2571468566.

The spelling of 18663852 in words is "eighteen million, six hundred sixty-three thousand, eight hundred fifty-two".