18670985 has 8 divisors (see below), whose sum is σ = 22882176. Its totient is φ = 14618800.

The previous prime is 18670979. The next prime is 18671011. The reversal of 18670985 is 58907681.

It is a happy number.

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

It is not a de Polignac number, because 18670985 - 2⁶ = 18670921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39491 + ... + 39960.

It is an arithmetic number, because the mean of its divisors is an integer number (2860272).

Almost surely, 2^18670985 is an apocalyptic number.

It is an amenable number.

18670985 is a deficient number, since it is larger than the sum of its proper divisors (4211191).

18670985 is an equidigital number, since it uses as much as digits as its factorization.

18670985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79503.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18670985 is about 4320.9935200137. The cubic root of 18670985 is about 265.2909347770.

The spelling of 18670985 in words is "eighteen million, six hundred seventy thousand, nine hundred eighty-five".