9871975873 has 2 divisors, whose sum is σ = 9871975874. Its totient is φ = 9871975872.

The previous prime is 9871975793. The next prime is 9871975877. The reversal of 9871975873 is 3785791789.

9871975873 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6449374864 + 3422601009 = 80308^2 + 58503^2 .

It is a cyclic number.

It is not a de Polignac number, because 9871975873 - 2²¹ = 9869878721 is a prime.

It is a super-2 number, since 2×9871975873² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9871975877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4935987936 + 4935987937.

It is an arithmetic number, because the mean of its divisors is an integer number (4935987937).

Almost surely, 2^9871975873 is an apocalyptic number.

It is an amenable number.

9871975873 is a deficient number, since it is larger than the sum of its proper divisors (1).

9871975873 is an equidigital number, since it uses as much as digits as its factorization.

9871975873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 64.

The square root of 9871975873 is about 99357.8173723638. The cubic root of 9871975873 is about 2145.2011861509.

The spelling of 9871975873 in words is "nine billion, eight hundred seventy-one million, nine hundred seventy-five thousand, eight hundred seventy-three".