7533938821 has 2 divisors, whose sum is σ = 7533938822. Its totient is φ = 7533938820.

The previous prime is 7533938777. The next prime is 7533938827. The reversal of 7533938821 is 1288393357.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5374942596 + 2158996225 = 73314^2 + 46465^2 .

It is a cyclic number.

It is not a de Polignac number, because 7533938821 - 2¹⁹ = 7533414533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7533938827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3766969410 + 3766969411.

It is an arithmetic number, because the mean of its divisors is an integer number (3766969411).

Almost surely, 2^7533938821 is an apocalyptic number.

It is an amenable number.

7533938821 is a deficient number, since it is larger than the sum of its proper divisors (1).

7533938821 is an equidigital number, since it uses as much as digits as its factorization.

7533938821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The square root of 7533938821 is about 86798.2650805879. The cubic root of 7533938821 is about 1960.3819557051.

The spelling of 7533938821 in words is "seven billion, five hundred thirty-three million, nine hundred thirty-eight thousand, eight hundred twenty-one".