302128017949 has 2 divisors, whose sum is σ = 302128017950. Its totient is φ = 302128017948.

The previous prime is 302128017817. The next prime is 302128017979. The reversal of 302128017949 is 949710821203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294973903225 + 7154114724 = 543115^2 + 84582^2 .

It is a cyclic number.

It is not a de Polignac number, because 302128017949 - 2²⁹ = 301591147037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 302128017899 and 302128017908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302128017979) 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, 151064008974 + 151064008975.

It is an arithmetic number, because the mean of its divisors is an integer number (151064008975).

Almost surely, 2^302128017949 is an apocalyptic number.

It is an amenable number.

302128017949 is a deficient number, since it is larger than the sum of its proper divisors (1).

302128017949 is an equidigital number, since it uses as much as digits as its factorization.

302128017949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 302128017949 in words is "three hundred two billion, one hundred twenty-eight million, seventeen thousand, nine hundred forty-nine".