193189 has 2 divisors, whose sum is σ = 193190. Its totient is φ = 193188.

The previous prime is 193183. The next prime is 193201. The reversal of 193189 is 981391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128164 + 65025 = 358^2 + 255^2 .

It is an emirp because it is prime and its reverse (981391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193189 - 2³ = 193181 is a prime.

193189 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 193189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96594 + 96595.

It is an arithmetic number, because the mean of its divisors is an integer number (96595).

2¹⁹³¹⁸⁹ is an apocalyptic number.

It is an amenable number.

193189 is a deficient number, since it is larger than the sum of its proper divisors (1).

193189 is an equidigital number, since it uses as much as digits as its factorization.

193189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 193189 is about 439.5327064053. The cubic root of 193189 is about 57.8088235792.

The spelling of 193189 in words is "one hundred ninety-three thousand, one hundred eighty-nine".