8105226191 has 4 divisors (see below), whose sum is σ = 8105482632. Its totient is φ = 8104969752.

The previous prime is 8105226137. The next prime is 8105226223. The reversal of 8105226191 is 1916225018.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1916225018 = 2 ⋅958112509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8105226191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8105226091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72836 + ... + 146681.

It is an arithmetic number, because the mean of its divisors is an integer number (2026370658).

Almost surely, 2^8105226191 is an apocalyptic number.

8105226191 is a deficient number, since it is larger than the sum of its proper divisors (256441).

8105226191 is a wasteful number, since it uses less digits than its factorization.

8105226191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256440.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 8105226191 is about 90029.0297126432. The cubic root of 8105226191 is about 2008.7306813933.

The spelling of 8105226191 in words is "eight billion, one hundred five million, two hundred twenty-six thousand, one hundred ninety-one".