494158529 has 2 divisors, whose sum is σ = 494158530. Its totient is φ = 494158528.

The previous prime is 494158501. The next prime is 494158531. The reversal of 494158529 is 925851494.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481363600 + 12794929 = 21940^2 + 3577^2 .

It is a cyclic number.

It is not a de Polignac number, because 494158529 - 2¹⁶ = 494092993 is a prime.

Together with 494158531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (494158229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247079264 + 247079265.

It is an arithmetic number, because the mean of its divisors is an integer number (247079265).

Almost surely, 2^494158529 is an apocalyptic number.

It is an amenable number.

494158529 is a deficient number, since it is larger than the sum of its proper divisors (1).

494158529 is an equidigital number, since it uses as much as digits as its factorization.

494158529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 47.

The square root of 494158529 is about 22229.6767632820. The cubic root of 494158529 is about 790.5974911643.

The spelling of 494158529 in words is "four hundred ninety-four million, one hundred fifty-eight thousand, five hundred twenty-nine".