8168795449 has 2 divisors, whose sum is σ = 8168795450. Its totient is φ = 8168795448.

The previous prime is 8168795423. The next prime is 8168795489. The reversal of 8168795449 is 9445978618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6421137424 + 1747658025 = 80132^2 + 41805^2 .

It is a cyclic number.

It is not a de Polignac number, because 8168795449 - 2¹¹ = 8168793401 is a prime.

It is a super-2 number, since 2×8168795449² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8168795489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4084397724 + 4084397725.

It is an arithmetic number, because the mean of its divisors is an integer number (4084397725).

Almost surely, 2^8168795449 is an apocalyptic number.

It is an amenable number.

8168795449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8168795449 is an equidigital number, since it uses as much as digits as its factorization.

8168795449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 61.

The square root of 8168795449 is about 90381.3888419513. The cubic root of 8168795449 is about 2013.9685007829.

The spelling of 8168795449 in words is "eight billion, one hundred sixty-eight million, seven hundred ninety-five thousand, four hundred forty-nine".