9818109 has 24 divisors (see below), whose sum is σ = 16378752. Its totient is φ = 5551200.

The previous prime is 9818089. The next prime is 9818111. The reversal of 9818109 is 9018189.

It is not a de Polignac number, because 9818109 - 2⁷ = 9817981 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9818189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5592 + ... + 7134.

It is an arithmetic number, because the mean of its divisors is an integer number (682448).

Almost surely, 2^9818109 is an apocalyptic number.

It is an amenable number.

9818109 is a deficient number, since it is larger than the sum of its proper divisors (6560643).

9818109 is a wasteful number, since it uses less digits than its factorization.

9818109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 9818109 is about 3133.3861874975. The cubic root of 9818109 is about 214.1292272734.

The spelling of 9818109 in words is "nine million, eight hundred eighteen thousand, one hundred nine".