8122444189 has 2 divisors, whose sum is σ = 8122444190. Its totient is φ = 8122444188.

The previous prime is 8122444163. The next prime is 8122444219. The reversal of 8122444189 is 9814442218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7716744025 + 405700164 = 87845^2 + 20142^2 .

It is a cyclic number.

It is not a de Polignac number, because 8122444189 - 2¹⁷ = 8122313117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8122444489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4061222094 + 4061222095.

It is an arithmetic number, because the mean of its divisors is an integer number (4061222095).

Almost surely, 2^8122444189 is an apocalyptic number.

It is an amenable number.

8122444189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8122444189 is an equidigital number, since it uses as much as digits as its factorization.

8122444189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 43.

The square root of 8122444189 is about 90124.6036829012. The cubic root of 8122444189 is about 2010.1520630318.

The spelling of 8122444189 in words is "eight billion, one hundred twenty-two million, four hundred forty-four thousand, one hundred eighty-nine".