1685052193 has 4 divisors (see below), whose sum is σ = 1838238768. Its totient is φ = 1531865620.

The previous prime is 1685052191. The next prime is 1685052203. The reversal of 1685052193 is 3912505861.

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.

It is a cyclic number.

It is not a de Polignac number, because 1685052193 - 2¹ = 1685052191 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1685052191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76593271 + ... + 76593292.

It is an arithmetic number, because the mean of its divisors is an integer number (459559692).

Almost surely, 2^1685052193 is an apocalyptic number.

It is an amenable number.

1685052193 is a deficient number, since it is larger than the sum of its proper divisors (153186575).

1685052193 is a wasteful number, since it uses less digits than its factorization.

1685052193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153186574.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 1685052193 is about 41049.3872426861. The cubic root of 1685052193 is about 1189.9748583536.

The spelling of 1685052193 in words is "one billion, six hundred eighty-five million, fifty-two thousand, one hundred ninety-three".