7540189 has 2 divisors, whose sum is σ = 7540190. Its totient is φ = 7540188.

The previous prime is 7540171. The next prime is 7540199. The reversal of 7540189 is 9810457.

It is a happy number.

7540189 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4536900 + 3003289 = 2130^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 7540189 - 2⁵ = 7540157 is a prime.

7540189 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7540139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3770094 + 3770095.

It is an arithmetic number, because the mean of its divisors is an integer number (3770095).

Almost surely, 2^7540189 is an apocalyptic number.

It is an amenable number.

7540189 is a deficient number, since it is larger than the sum of its proper divisors (1).

7540189 is an equidigital number, since it uses as much as digits as its factorization.

7540189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 7540189 is about 2745.9404582037. The cubic root of 7540189 is about 196.0923918844.

The spelling of 7540189 in words is "seven million, five hundred forty thousand, one hundred eighty-nine".