9891828613 has 4 divisors (see below), whose sum is σ = 9987865888. Its totient is φ = 9795791340.

The previous prime is 9891828601. The next prime is 9891828619. The reversal of 9891828613 is 3168281989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3168281989 = 61 ⋅51939049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9891828613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891828619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48018483 + ... + 48018688.

It is an arithmetic number, because the mean of its divisors is an integer number (2496966472).

Almost surely, 2^9891828613 is an apocalyptic number.

It is an amenable number.

9891828613 is a deficient number, since it is larger than the sum of its proper divisors (96037275).

9891828613 is a wasteful number, since it uses less digits than its factorization.

9891828613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96037274.

The product of its digits is 1492992, while the sum is 55.

The square root of 9891828613 is about 99457.6724692469. The cubic root of 9891828613 is about 2146.6382373646.

The spelling of 9891828613 in words is "nine billion, eight hundred ninety-one million, eight hundred twenty-eight thousand, six hundred thirteen".