8168590949 has 2 divisors, whose sum is σ = 8168590950. Its totient is φ = 8168590948.

The previous prime is 8168590943. The next prime is 8168590999. The reversal of 8168590949 is 9490958618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7764781924 + 403809025 = 88118^2 + 20095^2 .

It is a cyclic number.

It is not a de Polignac number, because 8168590949 - 2⁸ = 8168590693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8168590943) 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, 4084295474 + 4084295475.

It is an arithmetic number, because the mean of its divisors is an integer number (4084295475).

Almost surely, 2^8168590949 is an apocalyptic number.

It is an amenable number.

8168590949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8168590949 is an equidigital number, since it uses as much as digits as its factorization.

8168590949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5598720, while the sum is 59.

The square root of 8168590949 is about 90380.2575178894. The cubic root of 8168590949 is about 2013.9516945517.

The spelling of 8168590949 in words is "eight billion, one hundred sixty-eight million, five hundred ninety thousand, nine hundred forty-nine".