18888488881 has 8 divisors (see below), whose sum is σ = 19751943744. Its totient is φ = 18028552080.

The previous prime is 18888488819. The next prime is 18888488903.

18888488881 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 18888488881 - 2¹⁵ = 18888456113 is a prime.

It is a super-2 number, since 2×18888488881² (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 18888488881.

It is not an unprimeable number, because it can be changed into a prime (18888480881) 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, 868530 + ... + 890011.

It is an arithmetic number, because the mean of its divisors is an integer number (2468992968).

Almost surely, 2^18888488881 is an apocalyptic number.

It is an amenable number.

18888488881 is a deficient number, since it is larger than the sum of its proper divisors (863454863).

18888488881 is a wasteful number, since it uses less digits than its factorization.

18888488881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759031.

The product of its digits is 67108864, while the sum is 70.

The spelling of 18888488881 in words is "eighteen billion, eight hundred eighty-eight million, four hundred eighty-eight thousand, eight hundred eighty-one".