9728634851 has 16 divisors (see below), whose sum is σ = 10544325120. Its totient is φ = 8922679680.

The previous prime is 9728634827. The next prime is 9728634871. The reversal of 9728634851 is 1584368279.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9728634851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9728634793 and 9728634802.

It is not an unprimeable number, because it can be changed into a prime (9728634871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2751881 + ... + 2755413.

It is an arithmetic number, because the mean of its divisors is an integer number (659020320).

Almost surely, 2^9728634851 is an apocalyptic number.

9728634851 is a deficient number, since it is larger than the sum of its proper divisors (815690269).

9728634851 is a wasteful number, since it uses less digits than its factorization.

9728634851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846.

The product of its digits is 2903040, while the sum is 53.

The square root of 9728634851 is about 98633.8423209803. The cubic root of 9728634851 is about 2134.7677553977.

The spelling of 9728634851 in words is "nine billion, seven hundred twenty-eight million, six hundred thirty-four thousand, eight hundred fifty-one".