1689193 has 4 divisors (see below), whose sum is σ = 1842768. Its totient is φ = 1535620.

The previous prime is 1689167. The next prime is 1689197. The reversal of 1689193 is 3919861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3919861 = 11 ⋅356351.

It is a cyclic number.

It is not a de Polignac number, because 1689193 - 2⁹ = 1688681 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1689197) 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 in 3 ways as a sum of consecutive naturals, for example, 76771 + ... + 76792.

It is an arithmetic number, because the mean of its divisors is an integer number (460692).

2^1689193 is an apocalyptic number.

It is an amenable number.

1689193 is a deficient number, since it is larger than the sum of its proper divisors (153575).

1689193 is a wasteful number, since it uses less digits than its factorization.

1689193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153574.

The product of its digits is 11664, while the sum is 37.

The square root of 1689193 is about 1299.6895783225. The cubic root of 1689193 is about 119.0948799604.

The spelling of 1689193 in words is "one million, six hundred eighty-nine thousand, one hundred ninety-three".