254005189 has 2 divisors, whose sum is σ = 254005190. Its totient is φ = 254005188.

The previous prime is 254005181. The next prime is 254005231. The reversal of 254005189 is 981500452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244672164 + 9333025 = 15642^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 254005189 - 2³ = 254005181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254005181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127002594 + 127002595.

It is an arithmetic number, because the mean of its divisors is an integer number (127002595).

Almost surely, 2^254005189 is an apocalyptic number.

It is an amenable number.

254005189 is a deficient number, since it is larger than the sum of its proper divisors (1).

254005189 is an equidigital number, since it uses as much as digits as its factorization.

254005189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 254005189 is about 15937.5402430864. The cubic root of 254005189 is about 633.3068657145.

The spelling of 254005189 in words is "two hundred fifty-four million, five thousand, one hundred eighty-nine".