30820825949 has 2 divisors, whose sum is σ = 30820825950. Its totient is φ = 30820825948.

The previous prime is 30820825933. The next prime is 30820825957. The reversal of 30820825949 is 94952802803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27070120900 + 3750705049 = 164530^2 + 61243^2 .

It is a cyclic number.

It is not a de Polignac number, because 30820825949 - 2⁴ = 30820825933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30820825897 and 30820825906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30820821949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15410412974 + 15410412975.

It is an arithmetic number, because the mean of its divisors is an integer number (15410412975).

Almost surely, 2^30820825949 is an apocalyptic number.

It is an amenable number.

30820825949 is a deficient number, since it is larger than the sum of its proper divisors (1).

30820825949 is an equidigital number, since it uses as much as digits as its factorization.

30820825949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 30820825949 in words is "thirty billion, eight hundred twenty million, eight hundred twenty-five thousand, nine hundred forty-nine".