826840193 has 2 divisors, whose sum is σ = 826840194. Its totient is φ = 826840192.

The previous prime is 826840181. The next prime is 826840207. The reversal of 826840193 is 391048628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 818360449 + 8479744 = 28607^2 + 2912^2 .

It is a cyclic number.

It is not a de Polignac number, because 826840193 - 2⁶ = 826840129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 826840193.

It is not a weakly prime, because it can be changed into another prime (826840123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413420096 + 413420097.

It is an arithmetic number, because the mean of its divisors is an integer number (413420097).

Almost surely, 2^826840193 is an apocalyptic number.

It is an amenable number.

826840193 is a deficient number, since it is larger than the sum of its proper divisors (1).

826840193 is an equidigital number, since it uses as much as digits as its factorization.

826840193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 826840193 is about 28754.8290379199. The cubic root of 826840193 is about 938.5855416770.

The spelling of 826840193 in words is "eight hundred twenty-six million, eight hundred forty thousand, one hundred ninety-three".