9275192821 has 2 divisors, whose sum is σ = 9275192822. Its totient is φ = 9275192820.

The previous prime is 9275192807. The next prime is 9275192831. The reversal of 9275192821 is 1282915729.

9275192821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7728343921 + 1546848900 = 87911^2 + 39330^2 .

It is a cyclic number.

It is not a de Polignac number, because 9275192821 - 2⁹ = 9275192309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9275192831) 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, 4637596410 + 4637596411.

It is an arithmetic number, because the mean of its divisors is an integer number (4637596411).

Almost surely, 2^9275192821 is an apocalyptic number.

It is an amenable number.

9275192821 is a deficient number, since it is larger than the sum of its proper divisors (1).

9275192821 is an equidigital number, since it uses as much as digits as its factorization.

9275192821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 46.

The square root of 9275192821 is about 96307.8024928406. The cubic root of 9275192821 is about 2101.0722280293.

The spelling of 9275192821 in words is "nine billion, two hundred seventy-five million, one hundred ninety-two thousand, eight hundred twenty-one".