189613 has 2 divisors, whose sum is σ = 189614.
Its totient is φ = 189612.
The previous prime is 189599. The next prime is 189617. The reversal of 189613 is 316981.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 170569 + 19044 = 413^2 + 138^2
It is a cyclic number.
It is not a de Polignac number, because 189613 - 213 = 181421 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (189617) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94806 + 94807.
It is an arithmetic number, because the mean of its divisors is an integer number (94807).
2189613 is an apocalyptic number.
It is an amenable number.
189613 is a deficient number, since it is larger than the sum of its proper divisors (1).
189613 is an equidigital number, since it uses as much as digits as its factorization.
189613 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1296, while the sum is 28.
The square root of 189613 is about 435.4457486301.
The cubic root of 189613 is about 57.4499122733.
The spelling of 189613 in words is "one hundred eighty-nine thousand, six hundred thirteen".