18106386 has 24 divisors (see below), whose sum is σ = 36861552. Its totient is φ = 5929200.

The previous prime is 18106351. The next prime is 18106423. The reversal of 18106386 is 68360181.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21921 + ... + 22731.

It is an arithmetic number, because the mean of its divisors is an integer number (1535898).

Almost surely, 2^18106386 is an apocalyptic number.

18106386 is an abundant number, since it is smaller than the sum of its proper divisors (18755166).

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

18106386 is an equidigital number, since it uses as much as digits as its factorization.

18106386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18106386 is about 4255.1599264893. The cubic root of 18106386 is about 262.5894407235.

The spelling of 18106386 in words is "eighteen million, one hundred six thousand, three hundred eighty-six".