493824889381 has 2 divisors, whose sum is σ = 493824889382. Its totient is φ = 493824889380.

The previous prime is 493824889343. The next prime is 493824889387. The reversal of 493824889381 is 183988428394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483706340100 + 10118549281 = 695490^2 + 100591^2 .

It is a cyclic number.

It is not a de Polignac number, because 493824889381 - 2¹¹ = 493824887333 is a prime.

It is a super-2 number, since 2×493824889381² (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 (493824889387) 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, 246912444690 + 246912444691.

It is an arithmetic number, because the mean of its divisors is an integer number (246912444691).

Almost surely, 2^493824889381 is an apocalyptic number.

It is an amenable number.

493824889381 is a deficient number, since it is larger than the sum of its proper divisors (1).

493824889381 is an equidigital number, since it uses as much as digits as its factorization.

493824889381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95551488, while the sum is 67.

The spelling of 493824889381 in words is "four hundred ninety-three billion, eight hundred twenty-four million, eight hundred eighty-nine thousand, three hundred eighty-one".