7271916191 has 2 divisors, whose sum is σ = 7271916192. Its totient is φ = 7271916190.

The previous prime is 7271916133. The next prime is 7271916299. The reversal of 7271916191 is 1916191727.

It is a weak prime.

It is an emirp because it is prime and its reverse (1916191727) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7271916191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7271916121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3635958095 + 3635958096.

It is an arithmetic number, because the mean of its divisors is an integer number (3635958096).

Almost surely, 2^7271916191 is an apocalyptic number.

7271916191 is a deficient number, since it is larger than the sum of its proper divisors (1).

7271916191 is an equidigital number, since it uses as much as digits as its factorization.

7271916191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 44.

The square root of 7271916191 is about 85275.5310215070. The cubic root of 7271916191 is about 1937.3865854167.

The spelling of 7271916191 in words is "seven billion, two hundred seventy-one million, nine hundred sixteen thousand, one hundred ninety-one".