18274988 has 12 divisors (see below), whose sum is σ = 33084240. Its totient is φ = 8822352.

The previous prime is 18274969. The next prime is 18275011. The reversal of 18274988 is 88947281.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 78656 + ... + 78887.

It is an arithmetic number, because the mean of its divisors is an integer number (2757020).

Almost surely, 2^18274988 is an apocalyptic number.

It is an amenable number.

18274988 is a deficient number, since it is larger than the sum of its proper divisors (14809252).

18274988 is a wasteful number, since it uses less digits than its factorization.

18274988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157576 (or 157574 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 18274988 is about 4274.9254964268. The cubic root of 18274988 is about 263.4019789349.

The spelling of 18274988 in words is "eighteen million, two hundred seventy-four thousand, nine hundred eighty-eight".