9871796865 has 16 divisors (see below), whose sum is σ = 18051285888. Its totient is φ = 4512821376.

The previous prime is 9871796849. The next prime is 9871796927. The reversal of 9871796865 is 5686971789.

It is not a de Polignac number, because 9871796865 - 2⁴ = 9871796849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9871796796 and 9871796805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47008452 + ... + 47008661.

It is an arithmetic number, because the mean of its divisors is an integer number (1128205368).

Almost surely, 2^9871796865 is an apocalyptic number.

It is an amenable number.

9871796865 is a deficient number, since it is larger than the sum of its proper divisors (8179489023).

9871796865 is a wasteful number, since it uses less digits than its factorization.

9871796865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94017128.

The product of its digits is 45722880, while the sum is 66.

The square root of 9871796865 is about 99356.9165433388. The cubic root of 9871796865 is about 2145.1882198005.

The spelling of 9871796865 in words is "nine billion, eight hundred seventy-one million, seven hundred ninety-six thousand, eight hundred sixty-five".