18867855086 has 8 divisors (see below), whose sum is σ = 28781474040. Its totient is φ = 9274030408.

The previous prime is 18867855079. The next prime is 18867855089. The reversal of 18867855086 is 68055876881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18867855089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79948421 + ... + 79948656.

It is an arithmetic number, because the mean of its divisors is an integer number (3597684255).

Almost surely, 2^18867855086 is an apocalyptic number.

18867855086 is a deficient number, since it is larger than the sum of its proper divisors (9913618954).

18867855086 is a wasteful number, since it uses less digits than its factorization.

18867855086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159897138.

The product of its (nonzero) digits is 25804800, while the sum is 62.

The spelling of 18867855086 in words is "eighteen billion, eight hundred sixty-seven million, eight hundred fifty-five thousand, eighty-six".