9945826860 has 24 divisors (see below), whose sum is σ = 27848315376. Its totient is φ = 2652220480.

The previous prime is 9945826843. The next prime is 9945826861. The reversal of 9945826860 is 686285499.

It is a self number, because there is not a number n which added to its sum of digits gives 9945826860.

It is not an unprimeable number, because it can be changed into a prime (9945826861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82881831 + ... + 82881950.

It is an arithmetic number, because the mean of its divisors is an integer number (1160346474).

Almost surely, 2^9945826860 is an apocalyptic number.

It is an amenable number.

9945826860 is an abundant number, since it is smaller than the sum of its proper divisors (17902488516).

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

9945826860 is a wasteful number, since it uses less digits than its factorization.

9945826860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165763793 (or 165763791 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The square root of 9945826860 is about 99728.7664618389. The cubic root of 9945826860 is about 2150.5372272068.

The spelling of 9945826860 in words is "nine billion, nine hundred forty-five million, eight hundred twenty-six thousand, eight hundred sixty".