449194253657 has 2 divisors, whose sum is σ = 449194253658. Its totient is φ = 449194253656.

The previous prime is 449194253639. The next prime is 449194253663. The reversal of 449194253657 is 756352491944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259303989961 + 189890263696 = 509219^2 + 435764^2 .

It is a cyclic number.

It is not a de Polignac number, because 449194253657 - 2⁶ = 449194253593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449194253596 and 449194253605.

It is not a weakly prime, because it can be changed into another prime (449194253617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224597126828 + 224597126829.

It is an arithmetic number, because the mean of its divisors is an integer number (224597126829).

Almost surely, 2^449194253657 is an apocalyptic number.

It is an amenable number.

449194253657 is a deficient number, since it is larger than the sum of its proper divisors (1).

449194253657 is an equidigital number, since it uses as much as digits as its factorization.

449194253657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 59.

The spelling of 449194253657 in words is "four hundred forty-nine billion, one hundred ninety-four million, two hundred fifty-three thousand, six hundred fifty-seven".