813735841 has 2 divisors, whose sum is σ = 813735842. Its totient is φ = 813735840.

The previous prime is 813735823. The next prime is 813735877. The reversal of 813735841 is 148537318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 802872225 + 10863616 = 28335^2 + 3296^2 .

It is a cyclic number.

It is not a de Polignac number, because 813735841 - 2¹⁷ = 813604769 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 813735794 and 813735803.

It is not a weakly prime, because it can be changed into another prime (813735541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406867920 + 406867921.

It is an arithmetic number, because the mean of its divisors is an integer number (406867921).

Almost surely, 2^813735841 is an apocalyptic number.

It is an amenable number.

813735841 is a deficient number, since it is larger than the sum of its proper divisors (1).

813735841 is an equidigital number, since it uses as much as digits as its factorization.

813735841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 813735841 is about 28526.0554756524. The cubic root of 813735841 is about 933.6006562357.

The spelling of 813735841 in words is "eight hundred thirteen million, seven hundred thirty-five thousand, eight hundred forty-one".