494126049481 has 9 divisors (see below), whose sum is σ = 498778247541. Its totient is φ = 489516865344.

The previous prime is 494126049467. The next prime is 494126049491. The reversal of 494126049481 is 184940621494.

The square root of 494126049481 is 702941.

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

It can be written as a sum of positive squares in 4 ways, for example, as 260856369081 + 233269680400 = 510741^2 + 482980^2 .

It is a de Polignac number, because none of the positive numbers 2^k-494126049481 is a prime.

It is a super-2 number, since 2×494126049481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494126049491) 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 8 ways as a sum of consecutive naturals, for example, 76617345 + ... + 76623793.

Almost surely, 2^494126049481 is an apocalyptic number.

494126049481 is the 702941-st square number.

494126049481 is the 351471-st centered octagonal number.

It is an amenable number.

494126049481 is a deficient number, since it is larger than the sum of its proper divisors (4652198060).

494126049481 is an frugal number, since it uses more digits than its factorization.

494126049481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116 (or 6558 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 494126049481 in words is "four hundred ninety-four billion, one hundred twenty-six million, forty-nine thousand, four hundred eighty-one".