8020810191 has 16 divisors (see below), whose sum is σ = 10767826400. Its totient is φ = 5310534528.

The previous prime is 8020810181. The next prime is 8020810211. The reversal of 8020810191 is 1910180208.

It is not a de Polignac number, because 8020810191 - 2⁹ = 8020809679 is a prime.

It is a super-2 number, since 2×8020810191² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8020810121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1631445 + ... + 1636353.

It is an arithmetic number, because the mean of its divisors is an integer number (672989150).

Almost surely, 2^8020810191 is an apocalyptic number.

8020810191 is a deficient number, since it is larger than the sum of its proper divisors (2747016209).

8020810191 is a wasteful number, since it uses less digits than its factorization.

8020810191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8538.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 8020810191 is about 89558.9760493051. The cubic root of 8020810191 is about 2001.7326810580.

Adding to 8020810191 its reverse (1910180208), we get a palindrome (9930990399).

The spelling of 8020810191 in words is "eight billion, twenty million, eight hundred ten thousand, one hundred ninety-one".