18858066 has 32 divisors (see below), whose sum is σ = 40134528. Its totient is φ = 5886720.

The previous prime is 18858053. The next prime is 18858113. The reversal of 18858066 is 66085881.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29571 + ... + 30201.

It is an arithmetic number, because the mean of its divisors is an integer number (1254204).

Almost surely, 2^18858066 is an apocalyptic number.

18858066 is an abundant number, since it is smaller than the sum of its proper divisors (21276462).

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

18858066 is a wasteful number, since it uses less digits than its factorization.

18858066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 18858066 is about 4342.5874775300. The cubic root of 18858066 is about 266.1740527062.

The spelling of 18858066 in words is "eighteen million, eight hundred fifty-eight thousand, sixty-six".