18108285 has 16 divisors (see below), whose sum is σ = 31202304. Its totient is φ = 8914752.

The previous prime is 18108283. The next prime is 18108287. The reversal of 18108285 is 58280181.

It is an interprime number because it is at equal distance from previous prime (18108283) and next prime (18108287).

It is not a de Polignac number, because 18108285 - 2¹ = 18108283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18108283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46237 + ... + 46626.

It is an arithmetic number, because the mean of its divisors is an integer number (1950144).

Almost surely, 2^18108285 is an apocalyptic number.

18108285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18108285 is a deficient number, since it is larger than the sum of its proper divisors (13094019).

18108285 is a wasteful number, since it uses less digits than its factorization.

18108285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92884.

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 18108285 is about 4255.3830614881. The cubic root of 18108285 is about 262.5986205403.

The spelling of 18108285 in words is "eighteen million, one hundred eight thousand, two hundred eighty-five".