245015189 has 2 divisors, whose sum is σ = 245015190. Its totient is φ = 245015188.

The previous prime is 245015149. The next prime is 245015201. The reversal of 245015189 is 981510542.

245015189 is digitally balanced in base 2, 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., 227859025 + 17156164 = 15095^2 + 4142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245015189 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245015129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122507594 + 122507595.

It is an arithmetic number, because the mean of its divisors is an integer number (122507595).

Almost surely, 2^245015189 is an apocalyptic number.

It is an amenable number.

245015189 is a deficient number, since it is larger than the sum of its proper divisors (1).

245015189 is an equidigital number, since it uses as much as digits as its factorization.

245015189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 245015189 is about 15652.9610297860. The cubic root of 245015189 is about 625.7454052535.

The spelling of 245015189 in words is "two hundred forty-five million, fifteen thousand, one hundred eighty-nine".