8418118109 has 2 divisors, whose sum is σ = 8418118110. Its totient is φ = 8418118108.

The previous prime is 8418118097. The next prime is 8418118117. The reversal of 8418118109 is 9018118148.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5925612484 + 2492505625 = 76978^2 + 49925^2 .

It is a cyclic number.

It is not a de Polignac number, because 8418118109 - 2¹² = 8418114013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8418118129) 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 as a sum of consecutive naturals, namely, 4209059054 + 4209059055.

It is an arithmetic number, because the mean of its divisors is an integer number (4209059055).

Almost surely, 2^8418118109 is an apocalyptic number.

It is an amenable number.

8418118109 is a deficient number, since it is larger than the sum of its proper divisors (1).

8418118109 is an equidigital number, since it uses as much as digits as its factorization.

8418118109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 41.

The square root of 8418118109 is about 91750.3030458211. The cubic root of 8418118109 is about 2034.2531863133.

The spelling of 8418118109 in words is "eight billion, four hundred eighteen million, one hundred eighteen thousand, one hundred nine".