245313149 has 2 divisors, whose sum is σ = 245313150. Its totient is φ = 245313148.

The previous prime is 245313121. The next prime is 245313191. The reversal of 245313149 is 941313542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187279225 + 58033924 = 13685^2 + 7618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245313149 is a prime.

It is a Chen prime.

It is equal to p_13436870 and since 245313149 and 13436870 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245313109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122656574 + 122656575.

It is an arithmetic number, because the mean of its divisors is an integer number (122656575).

Almost surely, 2^245313149 is an apocalyptic number.

It is an amenable number.

245313149 is a deficient number, since it is larger than the sum of its proper divisors (1).

245313149 is an equidigital number, since it uses as much as digits as its factorization.

245313149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 245313149 is about 15662.4758259989. The cubic root of 245313149 is about 625.9989563008.

The spelling of 245313149 in words is "two hundred forty-five million, three hundred thirteen thousand, one hundred forty-nine".