18286161 has 8 divisors (see below), whose sum is σ = 24421824. Its totient is φ = 12170640.

The previous prime is 18286141. The next prime is 18286183. The reversal of 18286161 is 16168281.

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

It is not a de Polignac number, because 18286161 - 2⁶ = 18286097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18286141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770 + ... + 6651.

It is an arithmetic number, because the mean of its divisors is an integer number (3052728).

Almost surely, 2^18286161 is an apocalyptic number.

It is an amenable number.

18286161 is a deficient number, since it is larger than the sum of its proper divisors (6135663).

18286161 is an equidigital number, since it uses as much as digits as its factorization.

18286161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10071.

The product of its digits is 4608, while the sum is 33.

The square root of 18286161 is about 4276.2321031488. The cubic root of 18286161 is about 263.4556477481.

Subtracting from 18286161 its sum of digits (33), we obtain a triangular number (18286128 = T₆₀₄₇).

The spelling of 18286161 in words is "eighteen million, two hundred eighty-six thousand, one hundred sixty-one".