18218852 has 12 divisors (see below), whose sum is σ = 33269376. Its totient is φ = 8713320.

The previous prime is 18218839. The next prime is 18218857. The reversal of 18218852 is 25881281.

It is not an unprimeable number, because it can be changed into a prime (18218857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98924 + ... + 99107.

It is an arithmetic number, because the mean of its divisors is an integer number (2772448).

Almost surely, 2^18218852 is an apocalyptic number.

It is an amenable number.

18218852 is a deficient number, since it is larger than the sum of its proper divisors (15050524).

18218852 is a wasteful number, since it uses less digits than its factorization.

18218852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198058 (or 198056 counting only the distinct ones).

The product of its digits is 10240, while the sum is 35.

The square root of 18218852 is about 4268.3547181555. The cubic root of 18218852 is about 263.1320015702.

The spelling of 18218852 in words is "eighteen million, two hundred eighteen thousand, eight hundred fifty-two".