9890173881 has 24 divisors (see below), whose sum is σ = 16329418560. Its totient is φ = 5650564896.

The previous prime is 9890173859. The next prime is 9890173897. The reversal of 9890173881 is 1883710989.

It is not a de Polignac number, because 9890173881 - 2¹⁰ = 9890172857 is a prime.

It is a super-2 number, since 2×9890173881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9890173681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538630 + ... + 556688.

It is an arithmetic number, because the mean of its divisors is an integer number (680392440).

Almost surely, 2^9890173881 is an apocalyptic number.

It is an amenable number.

9890173881 is a deficient number, since it is larger than the sum of its proper divisors (6439244679).

9890173881 is a wasteful number, since it uses less digits than its factorization.

9890173881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26765 (or 26762 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The square root of 9890173881 is about 99449.3533463139. The cubic root of 9890173881 is about 2146.5185321948.

The spelling of 9890173881 in words is "nine billion, eight hundred ninety million, one hundred seventy-three thousand, eight hundred eighty-one".