9647793540 has 288 divisors, whose sum is σ = 36670233600. Its totient is φ = 1994630400.

The previous prime is 9647793481. The next prime is 9647793569. The reversal of 9647793540 is 453977469.

It is a happy number.

9647793540 is a `hidden beast` number, since 9 + 6 + 4 + 7 + 7 + 93 + 540 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2922811 + ... + 2926109.

It is an arithmetic number, because the mean of its divisors is an integer number (127327200).

Almost surely, 2^9647793540 is an apocalyptic number.

9647793540 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9647793540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18335116800).

9647793540 is an abundant number, since it is smaller than the sum of its proper divisors (27022440060).

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

9647793540 is a wasteful number, since it uses less digits than its factorization.

9647793540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3538 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The square root of 9647793540 is about 98223.1822942018. The cubic root of 9647793540 is about 2128.8382608817.

The spelling of 9647793540 in words is "nine billion, six hundred forty-seven million, seven hundred ninety-three thousand, five hundred forty".