8112197549 has 2 divisors, whose sum is σ = 8112197550. Its totient is φ = 8112197548.

The previous prime is 8112197537. The next prime is 8112197563. The reversal of 8112197549 is 9457912118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5812995049 + 2299202500 = 76243^2 + 47950^2 .

It is a cyclic number.

It is not a de Polignac number, because 8112197549 - 2³² = 3817230253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8112197449) 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, 4056098774 + 4056098775.

It is an arithmetic number, because the mean of its divisors is an integer number (4056098775).

Almost surely, 2^8112197549 is an apocalyptic number.

It is an amenable number.

8112197549 is a deficient number, since it is larger than the sum of its proper divisors (1).

8112197549 is an equidigital number, since it uses as much as digits as its factorization.

8112197549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 47.

The square root of 8112197549 is about 90067.7386692927. The cubic root of 8112197549 is about 2009.3064238191.

The spelling of 8112197549 in words is "eight billion, one hundred twelve million, one hundred ninety-seven thousand, five hundred forty-nine".