18080185 has 8 divisors (see below), whose sum is σ = 22639680. Its totient is φ = 13835184.

The previous prime is 18080149. The next prime is 18080203. The reversal of 18080185 is 58108081.

It is a happy number.

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 18080185 - 2¹⁵ = 18047417 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 78495 + ... + 78724.

It is an arithmetic number, because the mean of its divisors is an integer number (2829960).

Almost surely, 2^18080185 is an apocalyptic number.

It is an amenable number.

18080185 is a deficient number, since it is larger than the sum of its proper divisors (4559495).

18080185 is a wasteful number, since it uses less digits than its factorization.

18080185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157247.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 18080185 is about 4252.0800792083. The cubic root of 18080185 is about 262.4627188173.

The spelling of 18080185 in words is "eighteen million, eighty thousand, one hundred eighty-five".