492168193457 has 2 divisors, whose sum is σ = 492168193458. Its totient is φ = 492168193456.

The previous prime is 492168193427. The next prime is 492168193459. The reversal of 492168193457 is 754391861294.

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., 247530130576 + 244638062881 = 497524^2 + 494609^2 .

It is a cyclic number.

It is not a de Polignac number, because 492168193457 - 2¹² = 492168189361 is a prime.

It is a super-2 number, since 2×492168193457² (a number of 24 digits) contains 22 as substring.

Together with 492168193459, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 492168193396 and 492168193405.

It is not a weakly prime, because it can be changed into another prime (492168193459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246084096728 + 246084096729.

It is an arithmetic number, because the mean of its divisors is an integer number (246084096729).

Almost surely, 2^492168193457 is an apocalyptic number.

It is an amenable number.

492168193457 is a deficient number, since it is larger than the sum of its proper divisors (1).

492168193457 is an equidigital number, since it uses as much as digits as its factorization.

492168193457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 59.

The spelling of 492168193457 in words is "four hundred ninety-two billion, one hundred sixty-eight million, one hundred ninety-three thousand, four hundred fifty-seven".