18089219 has 8 divisors (see below), whose sum is σ = 18562368. Its totient is φ = 17619840.

The previous prime is 18089171. The next prime is 18089221. The reversal of 18089219 is 91298081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18089219 - 2¹⁶ = 18023683 is a prime.

It is a super-2 number, since 2×18089219² = 654439688059922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18089119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10529 + ... + 12125.

It is an arithmetic number, because the mean of its divisors is an integer number (2320296).

Almost surely, 2^18089219 is an apocalyptic number.

18089219 is a deficient number, since it is larger than the sum of its proper divisors (473149).

18089219 is a wasteful number, since it uses less digits than its factorization.

18089219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 18089219 is about 4253.1422501487. The cubic root of 18089219 is about 262.5064258442.

The spelling of 18089219 in words is "eighteen million, eighty-nine thousand, two hundred nineteen".