9457680640 has 36 divisors (see below), whose sum is σ = 22654103724. Its totient is φ = 3783071744.

The previous prime is 9457680611. The next prime is 9457680643. The reversal of 9457680640 is 460867549.

It can be written as a sum of positive squares in 2 ways, for example, as 7332839424 + 2124841216 = 85632^2 + 46096^2 .

It is not an unprimeable number, because it can be changed into a prime (9457680643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3693127 + ... + 3695686.

It is an arithmetic number, because the mean of its divisors is an integer number (629280659).

Almost surely, 2^9457680640 is an apocalyptic number.

It is an amenable number.

9457680640 is an abundant number, since it is smaller than the sum of its proper divisors (13196423084).

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

9457680640 is an equidigital number, since it uses as much as digits as its factorization.

9457680640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7388834 (or 7388820 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 9457680640 is about 97250.6074017021. The cubic root of 9457680640 is about 2114.7622450877.

The spelling of 9457680640 in words is "nine billion, four hundred fifty-seven million, six hundred eighty thousand, six hundred forty".