18866106 has 24 divisors (see below), whose sum is σ = 46716384. Its totient is φ = 5390280.

The previous prime is 18866101. The next prime is 18866117. The reversal of 18866106 is 60166881.

It is not an unprimeable number, because it can be changed into a prime (18866101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74740 + ... + 74991.

It is an arithmetic number, because the mean of its divisors is an integer number (1946516).

Almost surely, 2^18866106 is an apocalyptic number.

18866106 is an abundant number, since it is smaller than the sum of its proper divisors (27850278).

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

18866106 is a wasteful number, since it uses less digits than its factorization.

18866106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149746 (or 149743 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18866106 is about 4343.5130942591. The cubic root of 18866106 is about 266.2118744589.

The spelling of 18866106 in words is "eighteen million, eight hundred sixty-six thousand, one hundred six".