8918913589 has 2 divisors, whose sum is σ = 8918913590. Its totient is φ = 8918913588.

The previous prime is 8918913533. The next prime is 8918913613. The reversal of 8918913589 is 9853198198.

8918913589 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8270447364 + 648466225 = 90942^2 + 25465^2 .

It is a cyclic number.

It is not a de Polignac number, because 8918913589 - 2¹¹ = 8918911541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8918913089) 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 as a sum of consecutive naturals, namely, 4459456794 + 4459456795.

It is an arithmetic number, because the mean of its divisors is an integer number (4459456795).

Almost surely, 2^8918913589 is an apocalyptic number.

It is an amenable number.

8918913589 is a deficient number, since it is larger than the sum of its proper divisors (1).

8918913589 is an equidigital number, since it uses as much as digits as its factorization.

8918913589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 61.

The square root of 8918913589 is about 94439.9999417620. Note that the first 4 decimals coincide. The cubic root of 8918913589 is about 2073.8180592772.

The spelling of 8918913589 in words is "eight billion, nine hundred eighteen million, nine hundred thirteen thousand, five hundred eighty-nine".