18086006 has 4 divisors (see below), whose sum is σ = 27129012. Its totient is φ = 9043002.

The previous prime is 18085997. The next prime is 18086009. The reversal of 18086006 is 60068081.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18086006² = 654207226064072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18086006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18086009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4521500 + ... + 4521503.

It is an arithmetic number, because the mean of its divisors is an integer number (6782253).

Almost surely, 2^18086006 is an apocalyptic number.

18086006 is a deficient number, since it is larger than the sum of its proper divisors (9043006).

18086006 is an equidigital number, since it uses as much as digits as its factorization.

18086006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9043005.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18086006 is about 4252.7645126435. The cubic root of 18086006 is about 262.4908828277.

The spelling of 18086006 in words is "eighteen million, eighty-six thousand, six".