245385949 has 2 divisors, whose sum is σ = 245385950. Its totient is φ = 245385948.

The previous prime is 245385947. The next prime is 245385953. The reversal of 245385949 is 949583542.

245385949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241802500 + 3583449 = 15550^2 + 1893^2 .

It is a cyclic number.

It is not a de Polignac number, because 245385949 - 2¹ = 245385947 is a prime.

Together with 245385947, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245385947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122692974 + 122692975.

It is an arithmetic number, because the mean of its divisors is an integer number (122692975).

Almost surely, 2^245385949 is an apocalyptic number.

It is an amenable number.

245385949 is a deficient number, since it is larger than the sum of its proper divisors (1).

245385949 is an equidigital number, since it uses as much as digits as its factorization.

245385949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 49.

The square root of 245385949 is about 15664.7996795363. The cubic root of 245385949 is about 626.0608747328.

The spelling of 245385949 in words is "two hundred forty-five million, three hundred eighty-five thousand, nine hundred forty-nine".