9928951841 has 2 divisors, whose sum is σ = 9928951842. Its totient is φ = 9928951840.

The previous prime is 9928951829. The next prime is 9928951871. The reversal of 9928951841 is 1481598299.

9928951841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6174816400 + 3754135441 = 78580^2 + 61271^2 .

It is an emirp because it is prime and its reverse (1481598299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9928951841 - 2¹⁰ = 9928950817 is a prime.

It is not a weakly prime, because it can be changed into another prime (9928951871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4964475920 + 4964475921.

It is an arithmetic number, because the mean of its divisors is an integer number (4964475921).

Almost surely, 2^9928951841 is an apocalyptic number.

It is an amenable number.

9928951841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9928951841 is an equidigital number, since it uses as much as digits as its factorization.

9928951841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 56.

The square root of 9928951841 is about 99644.1259733859. The cubic root of 9928951841 is about 2149.3202712250.

The spelling of 9928951841 in words is "nine billion, nine hundred twenty-eight million, nine hundred fifty-one thousand, eight hundred forty-one".