9812963857 has 2 divisors, whose sum is σ = 9812963858. Its totient is φ = 9812963856.

The previous prime is 9812963791. The next prime is 9812963879. The reversal of 9812963857 is 7583692189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9162509841 + 650454016 = 95721^2 + 25504^2 .

It is an emirp because it is prime and its reverse (7583692189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9812963857 - 2⁷ = 9812963729 is a prime.

It is not a weakly prime, because it can be changed into another prime (9812963257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4906481928 + 4906481929.

It is an arithmetic number, because the mean of its divisors is an integer number (4906481929).

Almost surely, 2^9812963857 is an apocalyptic number.

It is an amenable number.

9812963857 is a deficient number, since it is larger than the sum of its proper divisors (1).

9812963857 is an equidigital number, since it uses as much as digits as its factorization.

9812963857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 58.

The square root of 9812963857 is about 99060.4050920447. The cubic root of 9812963857 is about 2140.9181619958.

The spelling of 9812963857 in words is "nine billion, eight hundred twelve million, nine hundred sixty-three thousand, eight hundred fifty-seven".