618822812314549 has 2 divisors, whose sum is σ = 618822812314550. Its totient is φ = 618822812314548.

The previous prime is 618822812314507. The next prime is 618822812314583. The reversal of 618822812314549 is 945413218228816.

618822812314549 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., 564682545302500 + 54140267012049 = 23763050^2 + 7358007^2 .

It is a cyclic number.

It is not a de Polignac number, because 618822812314549 - 2⁹ = 618822812314037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618822812314349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309411406157274 + 309411406157275.

It is an arithmetic number, because the mean of its divisors is an integer number (309411406157275).

Almost surely, 2^{618822812314549} is an apocalyptic number.

It is an amenable number.

618822812314549 is a deficient number, since it is larger than the sum of its proper divisors (1).

618822812314549 is an equidigital number, since it uses as much as digits as its factorization.

618822812314549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53084160, while the sum is 64.

The spelling of 618822812314549 in words is "six hundred eighteen trillion, eight hundred twenty-two billion, eight hundred twelve million, three hundred fourteen thousand, five hundred forty-nine".