18283866 has 8 divisors (see below), whose sum is σ = 36567744. Its totient is φ = 6094620.

The previous prime is 18283861. The next prime is 18283877. The reversal of 18283866 is 66838281.

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

18283866 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18283861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523650 + ... + 1523661.

It is an arithmetic number, because the mean of its divisors is an integer number (4570968).

Almost surely, 2^18283866 is an apocalyptic number.

18283866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18283866 is a wasteful number, since it uses less digits than its factorization.

18283866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047316.

The product of its digits is 110592, while the sum is 42.

The square root of 18283866 is about 4275.9637510157. The cubic root of 18283866 is about 263.4446256422. Note that the first 3 decimals are identical.

It can be divided in two parts, 182 and 83866, that added together give a palindrome (84048).

The spelling of 18283866 in words is "eighteen million, two hundred eighty-three thousand, eight hundred sixty-six".