18284161 has 8 divisors (see below), whose sum is σ = 21003840. Its totient is φ = 15591408.

The previous prime is 18284117. The next prime is 18284171. The reversal of 18284161 is 16148281.

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

It is not a de Polignac number, because 18284161 - 2¹⁹ = 17759873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18284171) 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, 5251 + ... + 8008.

It is an arithmetic number, because the mean of its divisors is an integer number (2625480).

Almost surely, 2^18284161 is an apocalyptic number.

It is an amenable number.

18284161 is a deficient number, since it is larger than the sum of its proper divisors (2719679).

18284161 is a wasteful number, since it uses less digits than its factorization.

18284161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13463.

The product of its digits is 3072, while the sum is 31.

The square root of 18284161 is about 4275.9982460240. The cubic root of 18284161 is about 263.4460424787.

The spelling of 18284161 in words is "eighteen million, two hundred eighty-four thousand, one hundred sixty-one".