245670149 has 2 divisors, whose sum is σ = 245670150. Its totient is φ = 245670148.

The previous prime is 245670143. The next prime is 245670163. The reversal of 245670149 is 941076542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237930625 + 7739524 = 15425^2 + 2782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245670149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245670143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122835074 + 122835075.

It is an arithmetic number, because the mean of its divisors is an integer number (122835075).

Almost surely, 2^245670149 is an apocalyptic number.

It is an amenable number.

245670149 is a deficient number, since it is larger than the sum of its proper divisors (1).

245670149 is an equidigital number, since it uses as much as digits as its factorization.

245670149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 245670149 is about 15673.8683483051. The cubic root of 245670149 is about 626.3024776111.

The spelling of 245670149 in words is "two hundred forty-five million, six hundred seventy thousand, one hundred forty-nine".