245183189 has 2 divisors, whose sum is σ = 245183190. Its totient is φ = 245183188.

The previous prime is 245183179. The next prime is 245183209. The reversal of 245183189 is 981381542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195720100 + 49463089 = 13990^2 + 7033^2 .

It is a cyclic number.

It is not a de Polignac number, because 245183189 - 2⁸ = 245182933 is a prime.

It is a super-2 number, since 2×245183189² = 120229592336419442, 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 (245183179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122591594 + 122591595.

It is an arithmetic number, because the mean of its divisors is an integer number (122591595).

Almost surely, 2^245183189 is an apocalyptic number.

It is an amenable number.

245183189 is a deficient number, since it is larger than the sum of its proper divisors (1).

245183189 is an equidigital number, since it uses as much as digits as its factorization.

245183189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The square root of 245183189 is about 15658.3265070058. The cubic root of 245183189 is about 625.8883912326. Note that the first 3 decimals are identical.

The spelling of 245183189 in words is "two hundred forty-five million, one hundred eighty-three thousand, one hundred eighty-nine".