492690457817 has 2 divisors, whose sum is σ = 492690457818. Its totient is φ = 492690457816.

The previous prime is 492690457781. The next prime is 492690457823. The reversal of 492690457817 is 718754096294.

Together with previous prime (492690457781) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487282179136 + 5408278681 = 698056^2 + 73541^2 .

It is a cyclic number.

It is not a de Polignac number, because 492690457817 - 2¹² = 492690453721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 492690457817.

It is not a weakly prime, because it can be changed into another prime (492690457837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246345228908 + 246345228909.

It is an arithmetic number, because the mean of its divisors is an integer number (246345228909).

Almost surely, 2^492690457817 is an apocalyptic number.

It is an amenable number.

492690457817 is a deficient number, since it is larger than the sum of its proper divisors (1).

492690457817 is an equidigital number, since it uses as much as digits as its factorization.

492690457817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 492690457817 in words is "four hundred ninety-two billion, six hundred ninety million, four hundred fifty-seven thousand, eight hundred seventeen".