190566226457 has 2 divisors, whose sum is σ = 190566226458. Its totient is φ = 190566226456.

The previous prime is 190566226427. The next prime is 190566226471. The reversal of 190566226457 is 754622665091.

It is a happy number.

190566226457 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., 190371651856 + 194574601 = 436316^2 + 13949^2 .

It is an emirp because it is prime and its reverse (754622665091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190566226457 - 2¹⁴ = 190566210073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190566226399 and 190566226408.

It is not a weakly prime, because it can be changed into another prime (190566226427) 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, 95283113228 + 95283113229.

It is an arithmetic number, because the mean of its divisors is an integer number (95283113229).

Almost surely, 2^190566226457 is an apocalyptic number.

It is an amenable number.

190566226457 is a deficient number, since it is larger than the sum of its proper divisors (1).

190566226457 is an equidigital number, since it uses as much as digits as its factorization.

190566226457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 190566226457 in words is "one hundred ninety billion, five hundred sixty-six million, two hundred twenty-six thousand, four hundred fifty-seven".