8136445873 has 2 divisors, whose sum is σ = 8136445874. Its totient is φ = 8136445872.

The previous prime is 8136445861. The next prime is 8136445879. The reversal of 8136445873 is 3785446318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7467033744 + 669412129 = 86412^2 + 25873^2 .

It is a cyclic number.

It is not a de Polignac number, because 8136445873 - 2⁵ = 8136445841 is a prime.

It is not a weakly prime, because it can be changed into another prime (8136445879) 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, 4068222936 + 4068222937.

It is an arithmetic number, because the mean of its divisors is an integer number (4068222937).

Almost surely, 2^8136445873 is an apocalyptic number.

It is an amenable number.

8136445873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8136445873 is an equidigital number, since it uses as much as digits as its factorization.

8136445873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 49.

The square root of 8136445873 is about 90202.2498222744. The cubic root of 8136445873 is about 2011.3064510515.

It can be divided in two parts, 8136445 and 873, that added together give a palindrome (8137318).

The spelling of 8136445873 in words is "eight billion, one hundred thirty-six million, four hundred forty-five thousand, eight hundred seventy-three".