83718493 has 2 divisors, whose sum is σ = 83718494. Its totient is φ = 83718492.

The previous prime is 83718491. The next prime is 83718529. The reversal of 83718493 is 39481738.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69255684 + 14462809 = 8322^2 + 3803^2 .

It is a cyclic number.

It is not a de Polignac number, because 83718493 - 2¹ = 83718491 is a prime.

Together with 83718491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83718491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41859246 + 41859247.

It is an arithmetic number, because the mean of its divisors is an integer number (41859247).

Almost surely, 2^83718493 is an apocalyptic number.

It is an amenable number.

83718493 is a deficient number, since it is larger than the sum of its proper divisors (1).

83718493 is an equidigital number, since it uses as much as digits as its factorization.

83718493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 83718493 is about 9149.7810356314. The cubic root of 83718493 is about 437.4621341922.

The spelling of 83718493 in words is "eighty-three million, seven hundred eighteen thousand, four hundred ninety-three".