9158872805 has 16 divisors (see below), whose sum is σ = 11072300400. Its totient is φ = 7272734208.

The previous prime is 9158872777. The next prime is 9158872819. The reversal of 9158872805 is 5082788519.

9158872805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 95702²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1447574209 + 7711298596 = 38047^2 + 87814^2 .

It is not a de Polignac number, because 9158872805 - 2⁸ = 9158872549 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1302479 + ... + 1309491.

It is an arithmetic number, because the mean of its divisors is an integer number (692018775).

Almost surely, 2^9158872805 is an apocalyptic number.

It is an amenable number.

9158872805 is a deficient number, since it is larger than the sum of its proper divisors (1913427595).

9158872805 is a wasteful number, since it uses less digits than its factorization.

9158872805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8920.

The product of its (nonzero) digits is 1612800, while the sum is 53.

The square root of 9158872805 is about 95702.0000052246. Note that the first 5 decimals coincide. The cubic root of 9158872805 is about 2092.2520846483.

The spelling of 9158872805 in words is "nine billion, one hundred fifty-eight million, eight hundred seventy-two thousand, eight hundred five".