82318493 has 2 divisors, whose sum is σ = 82318494. Its totient is φ = 82318492.

The previous prime is 82318459. The next prime is 82318499. The reversal of 82318493 is 39481328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74269924 + 8048569 = 8618^2 + 2837^2 .

It is a cyclic number.

It is not a de Polignac number, because 82318493 - 2²⁰ = 81269917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82318499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41159246 + 41159247.

It is an arithmetic number, because the mean of its divisors is an integer number (41159247).

Almost surely, 2^82318493 is an apocalyptic number.

It is an amenable number.

82318493 is a deficient number, since it is larger than the sum of its proper divisors (1).

82318493 is an equidigital number, since it uses as much as digits as its factorization.

82318493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 82318493 is about 9072.9539291236. The cubic root of 82318493 is about 435.0098962825.

The spelling of 82318493 in words is "eighty-two million, three hundred eighteen thousand, four hundred ninety-three".