189437 has 2 divisors, whose sum is σ = 189438. Its totient is φ = 189436.

The previous prime is 189433. The next prime is 189439. The reversal of 189437 is 734981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143641 + 45796 = 379^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 189437 - 2² = 189433 is a prime.

Together with 189439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94718 + 94719.

It is an arithmetic number, because the mean of its divisors is an integer number (94719).

2¹⁸⁹⁴³⁷ is an apocalyptic number.

It is an amenable number.

189437 is a deficient number, since it is larger than the sum of its proper divisors (1).

189437 is an equidigital number, since it uses as much as digits as its factorization.

189437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 189437 is about 435.2436099473. The cubic root of 189437 is about 57.4321316454.

It can be divided in two parts, 189 and 437, that added together give a palindrome (626).

The spelling of 189437 in words is "one hundred eighty-nine thousand, four hundred thirty-seven".