18886868881 has 8 divisors (see below), whose sum is σ = 19059160064. Its totient is φ = 18714946320.

The previous prime is 18886868857. The next prime is 18886868893.

18886868881 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 18886868881 - 2⁵ = 18886868849 is a prime.

It is a super-2 number, since 2×18886868881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18886868881.

It is not an unprimeable number, because it can be changed into a prime (18886868821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11311 + ... + 194683.

It is an arithmetic number, because the mean of its divisors is an integer number (2382395008).

Almost surely, 2^18886868881 is an apocalyptic number.

It is an amenable number.

18886868881 is a deficient number, since it is larger than the sum of its proper divisors (172291183).

18886868881 is a wasteful number, since it uses less digits than its factorization.

18886868881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184311.

The product of its digits is 75497472, while the sum is 70.

The spelling of 18886868881 in words is "eighteen billion, eight hundred eighty-six million, eight hundred sixty-eight thousand, eight hundred eighty-one".