4540189 has 2 divisors, whose sum is σ = 4540190. Its totient is φ = 4540188.

The previous prime is 4540187. The next prime is 4540201. The reversal of 4540189 is 9810454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2340900 + 2199289 = 1530^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540189 - 2¹ = 4540187 is a prime.

It is a super-2 number, since 2×4540189² = 41226632311442, which contains 22 as substring.

Together with 4540187, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4540189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4540181) 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 as a sum of consecutive naturals, namely, 2270094 + 2270095.

It is an arithmetic number, because the mean of its divisors is an integer number (2270095).

Almost surely, 2^4540189 is an apocalyptic number.

It is an amenable number.

4540189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540189 is an equidigital number, since it uses as much as digits as its factorization.

4540189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4540189 is about 2130.7719258522. The cubic root of 4540189 is about 165.5863922827.

The spelling of 4540189 in words is "four million, five hundred forty thousand, one hundred eighty-nine".