9891654875 has 16 divisors (see below), whose sum is σ = 12645884160. Its totient is φ = 7720312000.

The previous prime is 9891654869. The next prime is 9891654889. The reversal of 9891654875 is 5784561989.

It is not a de Polignac number, because 9891654875 - 2¹⁰ = 9891653851 is a prime.

It is a super-2 number, since 2×9891654875² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 959915 + ... + 970164.

It is an arithmetic number, because the mean of its divisors is an integer number (790367760).

Almost surely, 2^9891654875 is an apocalyptic number.

9891654875 is a deficient number, since it is larger than the sum of its proper divisors (2754229285).

9891654875 is a wasteful number, since it uses less digits than its factorization.

9891654875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930135 (or 1930125 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 62.

The square root of 9891654875 is about 99456.7990385775. The cubic root of 9891654875 is about 2146.6256695899.

The spelling of 9891654875 in words is "nine billion, eight hundred ninety-one million, six hundred fifty-four thousand, eight hundred seventy-five".