385330189 has 2 divisors, whose sum is σ = 385330190. Its totient is φ = 385330188.

The previous prime is 385330171. The next prime is 385330213. The reversal of 385330189 is 981033583.

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., 216590089 + 168740100 = 14717^2 + 12990^2 .

It is a cyclic number.

It is not a de Polignac number, because 385330189 - 2⁵ = 385330157 is a prime.

It is a super-4 number, since 4×385330189⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385330139) 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, 192665094 + 192665095.

It is an arithmetic number, because the mean of its divisors is an integer number (192665095).

Almost surely, 2^385330189 is an apocalyptic number.

It is an amenable number.

385330189 is a deficient number, since it is larger than the sum of its proper divisors (1).

385330189 is an equidigital number, since it uses as much as digits as its factorization.

385330189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 385330189 is about 19629.8290619149. The cubic root of 385330189 is about 727.6865455339.

The spelling of 385330189 in words is "three hundred eighty-five million, three hundred thirty thousand, one hundred eighty-nine".