18659085 has 8 divisors (see below), whose sum is σ = 29854560. Its totient is φ = 9951504.

The previous prime is 18659041. The next prime is 18659087. The reversal of 18659085 is 58095681.

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

It is not a de Polignac number, because 18659085 - 2¹² = 18654989 is a prime.

It is a super-2 number, since 2×18659085² = 696322906074450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18659087) by changing a digit.

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, 621955 + ... + 621984.

It is an arithmetic number, because the mean of its divisors is an integer number (3731820).

Almost surely, 2^18659085 is an apocalyptic number.

18659085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18659085 is a deficient number, since it is larger than the sum of its proper divisors (11195475).

18659085 is a wasteful number, since it uses less digits than its factorization.

18659085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243947.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 18659085 is about 4319.6163024046. The cubic root of 18659085 is about 265.2345615137.

The spelling of 18659085 in words is "eighteen million, six hundred fifty-nine thousand, eighty-five".