18916285 has 8 divisors (see below), whose sum is σ = 23084640. Its totient is φ = 14876304.

The previous prime is 18916279. The next prime is 18916297. The reversal of 18916285 is 58261981.

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 18916285 - 2⁵ = 18916253 is a prime.

It is a congruent 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, 31767 + ... + 32356.

It is an arithmetic number, because the mean of its divisors is an integer number (2885580).

Almost surely, 2^18916285 is an apocalyptic number.

It is an amenable number.

18916285 is a deficient number, since it is larger than the sum of its proper divisors (4168355).

18916285 is an equidigital number, since it uses as much as digits as its factorization.

18916285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64187.

The product of its digits is 34560, while the sum is 40.

The square root of 18916285 is about 4349.2855735166. The cubic root of 18916285 is about 266.4476839391.

The spelling of 18916285 in words is "eighteen million, nine hundred sixteen thousand, two hundred eighty-five".