493143347789 has 2 divisors, whose sum is σ = 493143347790. Its totient is φ = 493143347788.

The previous prime is 493143347777. The next prime is 493143347819. The reversal of 493143347789 is 987743341394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443922375625 + 49220972164 = 666275^2 + 221858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493143347789 is a prime.

It is a super-2 number, since 2×493143347789² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493143347729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246571673894 + 246571673895.

It is an arithmetic number, because the mean of its divisors is an integer number (246571673895).

Almost surely, 2^493143347789 is an apocalyptic number.

It is an amenable number.

493143347789 is a deficient number, since it is larger than the sum of its proper divisors (1).

493143347789 is an equidigital number, since it uses as much as digits as its factorization.

493143347789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 62.

The spelling of 493143347789 in words is "four hundred ninety-three billion, one hundred forty-three million, three hundred forty-seven thousand, seven hundred eighty-nine".