193385 has 4 divisors (see below), whose sum is σ = 232068. Its totient is φ = 154704.

The previous prime is 193381. The next prime is 193387. The reversal of 193385 is 583391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30976 + 162409 = 176^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 193385 - 2² = 193381 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193381) 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, 19334 + ... + 19343.

It is an arithmetic number, because the mean of its divisors is an integer number (58017).

2¹⁹³³⁸⁵ is an apocalyptic number.

It is an amenable number.

193385 is a deficient number, since it is larger than the sum of its proper divisors (38683).

193385 is an equidigital number, since it uses as much as digits as its factorization.

193385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38682.

The product of its digits is 3240, while the sum is 29.

The square root of 193385 is about 439.7556139494. The cubic root of 193385 is about 57.8283669621.

It can be divided in two parts, 193 and 385, that multiplied together give a triangular number (74305 = T₃₈₅).

The spelling of 193385 in words is "one hundred ninety-three thousand, three hundred eighty-five".