1919125355593 has 2 divisors, whose sum is σ = 1919125355594. Its totient is φ = 1919125355592.

The previous prime is 1919125355579. The next prime is 1919125355603. The reversal of 1919125355593 is 3955535219191.

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., 1876973980729 + 42151374864 = 1370027^2 + 205308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1919125355593 - 2³⁷ = 1781686402121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1919125355993) 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, 959562677796 + 959562677797.

It is an arithmetic number, because the mean of its divisors is an integer number (959562677797).

Almost surely, 2^{1919125355593} is an apocalyptic number.

It is an amenable number.

1919125355593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919125355593 is an equidigital number, since it uses as much as digits as its factorization.

1919125355593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8201250, while the sum is 58.

The spelling of 1919125355593 in words is "one trillion, nine hundred nineteen billion, one hundred twenty-five million, three hundred fifty-five thousand, five hundred ninety-three".