1449758075481 has 27 divisors (see below), whose sum is σ = 2224617287581. Its totient is φ = 909613595904.

The previous prime is 1449758075471. The next prime is 1449758075497. The reversal of 1449758075481 is 1845708579441.

The square root of 1449758075481 is 1204059.

It is a perfect power (a square), and thus also a powerful number.

1449758075481 is a `hidden beast` number, since 1 + 4 + 4 + 9 + 7 + 5 + 80 + 7 + 548 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12118707225 + 1437639368256 = 110085^2 + 1199016^2 .

It is not a de Polignac number, because 1449758075481 - 2⁹ = 1449758074969 is a prime.

It is a super-2 number, since 2×1449758075481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1449758075401) 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 in 26 ways as a sum of consecutive naturals, for example, 61395205 + ... + 61418813.

Almost surely, 2^{1449758075481} is an apocalyptic number.

1449758075481 is the 1204059-th square number.

1449758075481 is the 602030-th centered octagonal number.

It is an amenable number.

1449758075481 is a deficient number, since it is larger than the sum of its proper divisors (774859212100).

1449758075481 is an frugal number, since it uses more digits than its factorization.

1449758075481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47258 (or 23629 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 1449758075481 in words is "one trillion, four hundred forty-nine billion, seven hundred fifty-eight million, seventy-five thousand, four hundred eighty-one".