18116418669 has 8 divisors (see below), whose sum is σ = 24808068960. Its totient is φ = 11751190416.

The previous prime is 18116418667. The next prime is 18116418673. The reversal of 18116418669 is 96681461181.

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

It is not a de Polignac number, because 18116418669 - 2¹ = 18116418667 is a prime.

It is a super-2 number, since 2×18116418669² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18116418667) 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 7 ways as a sum of consecutive naturals, for example, 81605379 + ... + 81605600.

It is an arithmetic number, because the mean of its divisors is an integer number (3101008620).

Almost surely, 2^18116418669 is an apocalyptic number.

It is an amenable number.

18116418669 is a deficient number, since it is larger than the sum of its proper divisors (6691650291).

18116418669 is a wasteful number, since it uses less digits than its factorization.

18116418669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163211019.

The product of its digits is 497664, while the sum is 51.

The spelling of 18116418669 in words is "eighteen billion, one hundred sixteen million, four hundred eighteen thousand, six hundred sixty-nine".