1693493 has 2 divisors, whose sum is σ = 1693494. Its totient is φ = 1693492.

The previous prime is 1693441. The next prime is 1693501. The reversal of 1693493 is 3943961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1387684 + 305809 = 1178^2 + 553^2 .

It is a cyclic number.

It is not a de Polignac number, because 1693493 - 2⁶ = 1693429 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 9 + 3⁸ + 4² + 9³ + 3⁸ .

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1693093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846746 + 846747.

It is an arithmetic number, because the mean of its divisors is an integer number (846747).

2^1693493 is an apocalyptic number.

It is an amenable number.

1693493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1693493 is an equidigital number, since it uses as much as digits as its factorization.

1693493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 35.

The square root of 1693493 is about 1301.3427680669. The cubic root of 1693493 is about 119.1958500800.

The spelling of 1693493 in words is "one million, six hundred ninety-three thousand, four hundred ninety-three".