245326961449 has 2 divisors, whose sum is σ = 245326961450. Its totient is φ = 245326961448.

The previous prime is 245326961447. The next prime is 245326961489. The reversal of 245326961449 is 944169623542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147845633049 + 97481328400 = 384507^2 + 312220^2 .

It is a cyclic number.

It is not a de Polignac number, because 245326961449 - 2¹ = 245326961447 is a prime.

Together with 245326961447, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 245326961449.

It is not a weakly prime, because it can be changed into another prime (245326961447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122663480724 + 122663480725.

It is an arithmetic number, because the mean of its divisors is an integer number (122663480725).

Almost surely, 2^245326961449 is an apocalyptic number.

It is an amenable number.

245326961449 is a deficient number, since it is larger than the sum of its proper divisors (1).

245326961449 is an equidigital number, since it uses as much as digits as its factorization.

245326961449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 55.

The spelling of 245326961449 in words is "two hundred forty-five billion, three hundred twenty-six million, nine hundred sixty-one thousand, four hundred forty-nine".