8191126451 has 2 divisors, whose sum is σ = 8191126452. Its totient is φ = 8191126450.

The previous prime is 8191126379. The next prime is 8191126453. The reversal of 8191126451 is 1546211918.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8191126451 is a prime.

Together with 8191126453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8191126453) 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, 4095563225 + 4095563226.

It is an arithmetic number, because the mean of its divisors is an integer number (4095563226).

Almost surely, 2^8191126451 is an apocalyptic number.

8191126451 is a deficient number, since it is larger than the sum of its proper divisors (1).

8191126451 is an equidigital number, since it uses as much as digits as its factorization.

8191126451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 38.

The square root of 8191126451 is about 90504.8421411805. The cubic root of 8191126451 is about 2015.8020234583.

The spelling of 8191126451 in words is "eight billion, one hundred ninety-one million, one hundred twenty-six thousand, four hundred fifty-one".