18227087886 has 64 divisors (see below), whose sum is σ = 43493326848. Its totient is φ = 4979022048.

The previous prime is 18227087867. The next prime is 18227087899. The reversal of 18227087886 is 68878072281.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4096515 + ... + 4100961.

It is an arithmetic number, because the mean of its divisors is an integer number (679583232).

Almost surely, 2^18227087886 is an apocalyptic number.

18227087886 is an abundant number, since it is smaller than the sum of its proper divisors (25266238962).

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

18227087886 is a wasteful number, since it uses less digits than its factorization.

18227087886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8725.

The product of its (nonzero) digits is 4816896, while the sum is 57.

The spelling of 18227087886 in words is "eighteen billion, two hundred twenty-seven million, eighty-seven thousand, eight hundred eighty-six".