18006886 has 16 divisors (see below), whose sum is σ = 27588960. Its totient is φ = 8812800.

The previous prime is 18006881. The next prime is 18006887. The reversal of 18006886 is 68860081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18006881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19135 + ... + 20053.

It is an arithmetic number, because the mean of its divisors is an integer number (1724310).

Almost surely, 2^18006886 is an apocalyptic number.

18006886 is a deficient number, since it is larger than the sum of its proper divisors (9582074).

18006886 is a wasteful number, since it uses less digits than its factorization.

18006886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 18006886 is about 4243.4521324035. The cubic root of 18006886 is about 262.1075544662.

The spelling of 18006886 in words is "eighteen million, six thousand, eight hundred eighty-six".