9812147641 has 2 divisors, whose sum is σ = 9812147642. Its totient is φ = 9812147640.

The previous prime is 9812147603. The next prime is 9812147659. The reversal of 9812147641 is 1467412189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9227523600 + 584624041 = 96060^2 + 24179^2 .

It is a cyclic number.

It is not a de Polignac number, because 9812147641 - 2²¹ = 9810050489 is a prime.

It is not a weakly prime, because it can be changed into another prime (9812117641) 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, 4906073820 + 4906073821.

It is an arithmetic number, because the mean of its divisors is an integer number (4906073821).

Almost surely, 2^9812147641 is an apocalyptic number.

It is an amenable number.

9812147641 is a deficient number, since it is larger than the sum of its proper divisors (1).

9812147641 is an equidigital number, since it uses as much as digits as its factorization.

9812147641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 9812147641 is about 99056.2852170421. The cubic root of 9812147641 is about 2140.8588017408.

The spelling of 9812147641 in words is "nine billion, eight hundred twelve million, one hundred forty-seven thousand, six hundred forty-one".