9831894345 has 128 divisors (see below), whose sum is σ = 21952896000. Its totient is φ = 4148589312.

The previous prime is 9831894329. The next prime is 9831894403. The reversal of 9831894345 is 5434981389.

It is not a de Polignac number, because 9831894345 - 2⁴ = 9831894329 is a prime.

It is a super-2 number, since 2×9831894345² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9831894291 and 9831894300.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 593799 + ... + 610131.

It is an arithmetic number, because the mean of its divisors is an integer number (171507000).

Almost surely, 2^9831894345 is an apocalyptic number.

It is an amenable number.

9831894345 is an abundant number, since it is smaller than the sum of its proper divisors (12121001655).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9831894345 is a wasteful number, since it uses less digits than its factorization.

9831894345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16381 (or 16361 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 9831894345 is about 99155.9092792759. The cubic root of 9831894345 is about 2142.2939811806.

The spelling of 9831894345 in words is "nine billion, eight hundred thirty-one million, eight hundred ninety-four thousand, three hundred forty-five".