230878189 has 2 divisors, whose sum is σ = 230878190. Its totient is φ = 230878188.

The previous prime is 230878159. The next prime is 230878201. The reversal of 230878189 is 981878032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169130025 + 61748164 = 13005^2 + 7858^2 .

It is a cyclic number.

It is not a de Polignac number, because 230878189 - 2⁵ = 230878157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230878159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115439094 + 115439095.

It is an arithmetic number, because the mean of its divisors is an integer number (115439095).

Almost surely, 2^230878189 is an apocalyptic number.

It is an amenable number.

230878189 is a deficient number, since it is larger than the sum of its proper divisors (1).

230878189 is an equidigital number, since it uses as much as digits as its factorization.

230878189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 230878189 is about 15194.6763374545. The cubic root of 230878189 is about 613.4713740635.

The spelling of 230878189 in words is "two hundred thirty million, eight hundred seventy-eight thousand, one hundred eighty-nine".