493327681897 has 2 divisors, whose sum is σ = 493327681898. Its totient is φ = 493327681896.

The previous prime is 493327681883. The next prime is 493327681937. The reversal of 493327681897 is 798186723394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298220841216 + 195106840681 = 546096^2 + 441709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493327681897 is a prime.

It is not a weakly prime, because it can be changed into another prime (493324681897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246663840948 + 246663840949.

It is an arithmetic number, because the mean of its divisors is an integer number (246663840949).

Almost surely, 2^493327681897 is an apocalyptic number.

It is an amenable number.

493327681897 is a deficient number, since it is larger than the sum of its proper divisors (1).

493327681897 is an equidigital number, since it uses as much as digits as its factorization.

493327681897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 67.

The spelling of 493327681897 in words is "four hundred ninety-three billion, three hundred twenty-seven million, six hundred eighty-one thousand, eight hundred ninety-seven".