494957726909 has 2 divisors, whose sum is σ = 494957726910. Its totient is φ = 494957726908.

The previous prime is 494957726903. The next prime is 494957726947. The reversal of 494957726909 is 909627759494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361414987684 + 133542739225 = 601178^2 + 365435^2 .

It is a cyclic number.

It is not a de Polignac number, because 494957726909 - 2³⁶ = 426238250173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494957726903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247478863454 + 247478863455.

It is an arithmetic number, because the mean of its divisors is an integer number (247478863455).

Almost surely, 2^494957726909 is an apocalyptic number.

It is an amenable number.

494957726909 is a deficient number, since it is larger than the sum of its proper divisors (1).

494957726909 is an equidigital number, since it uses as much as digits as its factorization.

494957726909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308629440, while the sum is 71.

The spelling of 494957726909 in words is "four hundred ninety-four billion, nine hundred fifty-seven million, seven hundred twenty-six thousand, nine hundred nine".