1690424256341 has 2 divisors, whose sum is σ = 1690424256342. Its totient is φ = 1690424256340.

The previous prime is 1690424256277. The next prime is 1690424256373. The reversal of 1690424256341 is 1436524240961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974259806116 + 716164450225 = 987046^2 + 846265^2 .

It is an emirp because it is prime and its reverse (1436524240961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1690424256341 - 2⁶ = 1690424256277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690424255341) 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, 845212128170 + 845212128171.

It is an arithmetic number, because the mean of its divisors is an integer number (845212128171).

Almost surely, 2^{1690424256341} is an apocalyptic number.

It is an amenable number.

1690424256341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690424256341 is an equidigital number, since it uses as much as digits as its factorization.

1690424256341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 1690424256341 in words is "one trillion, six hundred ninety billion, four hundred twenty-four million, two hundred fifty-six thousand, three hundred forty-one".