9709668518 has 16 divisors (see below), whose sum is σ = 15947623440. Its totient is φ = 4397076000.

The previous prime is 9709668499. The next prime is 9709668539. The reversal of 9709668518 is 8158669079.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814433 + ... + 826268.

It is an arithmetic number, because the mean of its divisors is an integer number (996726465).

Almost surely, 2^9709668518 is an apocalyptic number.

9709668518 is a deficient number, since it is larger than the sum of its proper divisors (6237954922).

9709668518 is a wasteful number, since it uses less digits than its factorization.

9709668518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640983.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The square root of 9709668518 is about 98537.6502561331. The cubic root of 9709668518 is about 2133.3795833777.

The spelling of 9709668518 in words is "nine billion, seven hundred nine million, six hundred sixty-eight thousand, five hundred eighteen".