1681193 has 2 divisors, whose sum is σ = 1681194. Its totient is φ = 1681192.

The previous prime is 1681187. The next prime is 1681201. The reversal of 1681193 is 3911861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 316969 = 1168^2 + 563^2 .

It is an emirp because it is prime and its reverse (3911861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1681193 - 2⁶ = 1681129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1681103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840596 + 840597.

It is an arithmetic number, because the mean of its divisors is an integer number (840597).

2^1681193 is an apocalyptic number.

It is an amenable number.

1681193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681193 is an equidigital number, since it uses as much as digits as its factorization.

1681193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 1681193 is about 1296.6082677509. The cubic root of 1681193 is about 118.9065716785.

The spelling of 1681193 in words is "one million, six hundred eighty-one thousand, one hundred ninety-three".