18382285 has 16 divisors (see below), whose sum is σ = 22739904. Its totient is φ = 14257152.

The previous prime is 18382283. The next prime is 18382297. The reversal of 18382285 is 58228381.

It is a cyclic number.

It is not a de Polignac number, because 18382285 - 2¹ = 18382283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18382283) 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, 41274 + ... + 41716.

It is an arithmetic number, because the mean of its divisors is an integer number (1421244).

Almost surely, 2^18382285 is an apocalyptic number.

It is an amenable number.

18382285 is a deficient number, since it is larger than the sum of its proper divisors (4357619).

18382285 is a wasteful number, since it uses less digits than its factorization.

18382285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its digits is 30720, while the sum is 37.

The square root of 18382285 is about 4287.4567053208. The cubic root of 18382285 is about 263.9164728486.

The spelling of 18382285 in words is "eighteen million, three hundred eighty-two thousand, two hundred eighty-five".