9654731520 has 288 divisors, whose sum is σ = 36063616512. Its totient is φ = 2155216896.

The previous prime is 9654731509. The next prime is 9654731521. The reversal of 9654731520 is 251374569.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (9654731521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1151664 + ... + 1160016.

Almost surely, 2^9654731520 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 9654731520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18031808256).

9654731520 is an abundant number, since it is smaller than the sum of its proper divisors (26408884992).

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

9654731520 is a wasteful number, since it uses less digits than its factorization.

9654731520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427 (or 8413 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 9654731520 is about 98258.4933733466. The cubic root of 9654731520 is about 2129.3484396485.

The spelling of 9654731520 in words is "nine billion, six hundred fifty-four million, seven hundred thirty-one thousand, five hundred twenty".