819837241 has 2 divisors, whose sum is σ = 819837242. Its totient is φ = 819837240.

The previous prime is 819837233. The next prime is 819837281. The reversal of 819837241 is 142738918.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740982841 + 78854400 = 27221^2 + 8880^2 .

It is a cyclic number.

It is not a de Polignac number, because 819837241 - 2³ = 819837233 is a prime.

It is not a weakly prime, because it can be changed into another prime (819837281) 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, 409918620 + 409918621.

It is an arithmetic number, because the mean of its divisors is an integer number (409918621).

Almost surely, 2^819837241 is an apocalyptic number.

It is an amenable number.

819837241 is a deficient number, since it is larger than the sum of its proper divisors (1).

819837241 is an equidigital number, since it uses as much as digits as its factorization.

819837241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 819837241 is about 28632.8000901065. The cubic root of 819837241 is about 935.9282310527.

The spelling of 819837241 in words is "eight hundred nineteen million, eight hundred thirty-seven thousand, two hundred forty-one".