9454891871 has 2 divisors, whose sum is σ = 9454891872. Its totient is φ = 9454891870.

The previous prime is 9454891813. The next prime is 9454891889. The reversal of 9454891871 is 1781984549.

It is a strong prime.

It is an emirp because it is prime and its reverse (1781984549) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9454891871 - 2¹⁴ = 9454875487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9454851871) 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, 4727445935 + 4727445936.

It is an arithmetic number, because the mean of its divisors is an integer number (4727445936).

Almost surely, 2^9454891871 is an apocalyptic number.

9454891871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9454891871 is an equidigital number, since it uses as much as digits as its factorization.

9454891871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 56.

The square root of 9454891871 is about 97236.2682901807. The cubic root of 9454891871 is about 2114.5543659617.

The spelling of 9454891871 in words is "nine billion, four hundred fifty-four million, eight hundred ninety-one thousand, eight hundred seventy-one".