816818107 has 8 divisors (see below), whose sum is σ = 933811200. Its totient is φ = 699901224.

The previous prime is 816818099. The next prime is 816818117. The reversal of 816818107 is 701818618.

It is a happy number.

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 816818107 - 2³ = 816818099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 816818107.

It is not an unprimeable number, because it can be changed into a prime (816818117) 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, 6144 + ... + 40882.

It is an arithmetic number, because the mean of its divisors is an integer number (116726400).

Almost surely, 2^816818107 is an apocalyptic number.

816818107 is a deficient number, since it is larger than the sum of its proper divisors (116993093).

816818107 is a wasteful number, since it uses less digits than its factorization.

816818107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38105.

The product of its (nonzero) digits is 21504, while the sum is 40.

The square root of 816818107 is about 28580.0298635253. The cubic root of 816818107 is about 934.7779342417. Note that the first 3 decimals are identical.

The spelling of 816818107 in words is "eight hundred sixteen million, eight hundred eighteen thousand, one hundred seven".