774146222189 has 2 divisors, whose sum is σ = 774146222190. Its totient is φ = 774146222188.

The previous prime is 774146222167. The next prime is 774146222243. The reversal of 774146222189 is 981222641477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510736056964 + 263410165225 = 714658^2 + 513235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774146222189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 774146222189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774146222119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387073111094 + 387073111095.

It is an arithmetic number, because the mean of its divisors is an integer number (387073111095).

Almost surely, 2^774146222189 is an apocalyptic number.

It is an amenable number.

774146222189 is a deficient number, since it is larger than the sum of its proper divisors (1).

774146222189 is an equidigital number, since it uses as much as digits as its factorization.

774146222189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 53.

The spelling of 774146222189 in words is "seven hundred seventy-four billion, one hundred forty-six million, two hundred twenty-two thousand, one hundred eighty-nine".