9748781784 has 256 divisors, whose sum is σ = 32893516800. Its totient is φ = 2611574784.

The previous prime is 9748781773. The next prime is 9748781789. The reversal of 9748781784 is 4871878479.

9748781784 is a `hidden beast` number, since 9 + 7 + 487 + 81 + 78 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9748781789) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8918742 + ... + 8919834.

It is an arithmetic number, because the mean of its divisors is an integer number (128490300).

Almost surely, 2^9748781784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9748781784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16446758400).

9748781784 is an abundant number, since it is smaller than the sum of its proper divisors (23144735016).

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

9748781784 is a wasteful number, since it uses less digits than its factorization.

9748781784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1469 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The square root of 9748781784 is about 98735.9194214547. The cubic root of 9748781784 is about 2136.2403624222.

The spelling of 9748781784 in words is "nine billion, seven hundred forty-eight million, seven hundred eighty-one thousand, seven hundred eighty-four".