8121441589 has 2 divisors, whose sum is σ = 8121441590. Its totient is φ = 8121441588.

The previous prime is 8121441551. The next prime is 8121441689. The reversal of 8121441589 is 9851441218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6485886225 + 1635555364 = 80535^2 + 40442^2 .

It is a cyclic number.

It is not a de Polignac number, because 8121441589 - 2⁹ = 8121441077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8121441389) 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, 4060720794 + 4060720795.

It is an arithmetic number, because the mean of its divisors is an integer number (4060720795).

Almost surely, 2^8121441589 is an apocalyptic number.

It is an amenable number.

8121441589 is a deficient number, since it is larger than the sum of its proper divisors (1).

8121441589 is an equidigital number, since it uses as much as digits as its factorization.

8121441589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 43.

The square root of 8121441589 is about 90119.0412121656. The cubic root of 8121441589 is about 2010.0693514185.

It can be divided in two parts, 812 and 1441589, that added together give a square (1442401 = 1201²).

The spelling of 8121441589 in words is "eight billion, one hundred twenty-one million, four hundred forty-one thousand, five hundred eighty-nine".