18089662 has 4 divisors (see below), whose sum is σ = 27134496. Its totient is φ = 9044830.

The previous prime is 18089623. The next prime is 18089677. The reversal of 18089662 is 26698081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26698081 = 4549 ⋅5869.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4522414 + ... + 4522417.

It is an arithmetic number, because the mean of its divisors is an integer number (6783624).

Almost surely, 2^18089662 is an apocalyptic number.

18089662 is a deficient number, since it is larger than the sum of its proper divisors (9044834).

18089662 is an equidigital number, since it uses as much as digits as its factorization.

18089662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9044833.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 18089662 is about 4253.1943289720. The cubic root of 18089662 is about 262.5085687301.

The spelling of 18089662 in words is "eighteen million, eighty-nine thousand, six hundred sixty-two".