492259681 has 2 divisors, whose sum is σ = 492259682. Its totient is φ = 492259680.

The previous prime is 492259679. The next prime is 492259709. The reversal of 492259681 is 186952294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387893025 + 104366656 = 19695^2 + 10216^2 .

It is a cyclic number.

It is not a de Polignac number, because 492259681 - 2¹ = 492259679 is a prime.

It is a super-2 number, since 2×492259681² = 484639187076443522, which contains 22 as substring.

Together with 492259679, 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 (492254681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246129840 + 246129841.

It is an arithmetic number, because the mean of its divisors is an integer number (246129841).

Almost surely, 2^492259681 is an apocalyptic number.

It is an amenable number.

492259681 is a deficient number, since it is larger than the sum of its proper divisors (1).

492259681 is an equidigital number, since it uses as much as digits as its factorization.

492259681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 492259681 is about 22186.9259024318. The cubic root of 492259681 is about 789.5835443201.

The spelling of 492259681 in words is "four hundred ninety-two million, two hundred fifty-nine thousand, six hundred eighty-one".