9791851543 has 2 divisors, whose sum is σ = 9791851544. Its totient is φ = 9791851542.

The previous prime is 9791851541. The next prime is 9791851561. The reversal of 9791851543 is 3451581979.

9791851543 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9791851543 - 2¹ = 9791851541 is a prime.

Together with 9791851541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9791851541) 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, 4895925771 + 4895925772.

It is an arithmetic number, because the mean of its divisors is an integer number (4895925772).

Almost surely, 2^9791851543 is an apocalyptic number.

9791851543 is a deficient number, since it is larger than the sum of its proper divisors (1).

9791851543 is an equidigital number, since it uses as much as digits as its factorization.

9791851543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 52.

The square root of 9791851543 is about 98953.7848846622. The cubic root of 9791851543 is about 2139.3816846290.

The spelling of 9791851543 in words is "nine billion, seven hundred ninety-one million, eight hundred fifty-one thousand, five hundred forty-three".