145304189 has 2 divisors, whose sum is σ = 145304190. Its totient is φ = 145304188.

The previous prime is 145304183. The next prime is 145304209. The reversal of 145304189 is 981403541.

145304189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105740089 + 39564100 = 10283^2 + 6290^2 .

It is a cyclic number.

It is not a de Polignac number, because 145304189 - 2⁸ = 145303933 is a prime.

It is a super-2 number, since 2×145304189² = 42226614681895442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145304183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72652094 + 72652095.

It is an arithmetic number, because the mean of its divisors is an integer number (72652095).

Almost surely, 2^145304189 is an apocalyptic number.

It is an amenable number.

145304189 is a deficient number, since it is larger than the sum of its proper divisors (1).

145304189 is an equidigital number, since it uses as much as digits as its factorization.

145304189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 145304189 is about 12054.2187220906. The cubic root of 145304189 is about 525.7259061978.

The spelling of 145304189 in words is "one hundred forty-five million, three hundred four thousand, one hundred eighty-nine".