18799884 has 48 divisors (see below), whose sum is σ = 49218400. Its totient is φ = 6205248.

The previous prime is 18799883. The next prime is 18799897. The reversal of 18799884 is 48899781.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18799884.

It is not an unprimeable number, because it can be changed into a prime (18799883) 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 15 ways as a sum of consecutive naturals, for example, 10974 + ... + 12570.

Almost surely, 2^18799884 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 18799884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24609200).

18799884 is an abundant number, since it is smaller than the sum of its proper divisors (30418516).

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

18799884 is a wasteful number, since it uses less digits than its factorization.

18799884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719 (or 1711 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 18799884 is about 4335.8833010126. The cubic root of 18799884 is about 265.9000321581.

It can be divided in two parts, 18799 and 884, that added together give a 9-th power (19683 = 3⁹).

The spelling of 18799884 in words is "eighteen million, seven hundred ninety-nine thousand, eight hundred eighty-four".