18189046 has 8 divisors (see below), whose sum is σ = 27363240. Its totient is φ = 9067968.

The previous prime is 18189013. The next prime is 18189077. The reversal of 18189046 is 64098181.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 18188996 and 18189014.

It is a congruent number.

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, 12411 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (3420405).

Almost surely, 2^18189046 is an apocalyptic number.

18189046 is a deficient number, since it is larger than the sum of its proper divisors (9174194).

18189046 is a wasteful number, since it uses less digits than its factorization.

18189046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26558.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18189046 is about 4264.8617797063. The cubic root of 18189046 is about 262.9884287969.

The spelling of 18189046 in words is "eighteen million, one hundred eighty-nine thousand, forty-six".