812159041 has 2 divisors, whose sum is σ = 812159042. Its totient is φ = 812159040.

The previous prime is 812159039. The next prime is 812159083. The reversal of 812159041 is 140951218.

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., 809971600 + 2187441 = 28460^2 + 1479^2 .

It is a cyclic number.

It is not a de Polignac number, because 812159041 - 2¹ = 812159039 is a prime.

Together with 812159039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 812158994 and 812159012.

It is not a weakly prime, because it can be changed into another prime (812159021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406079520 + 406079521.

It is an arithmetic number, because the mean of its divisors is an integer number (406079521).

Almost surely, 2^812159041 is an apocalyptic number.

It is an amenable number.

812159041 is a deficient number, since it is larger than the sum of its proper divisors (1).

812159041 is an equidigital number, since it uses as much as digits as its factorization.

812159041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 812159041 is about 28498.4041833924. The cubic root of 812159041 is about 932.9972444525.

The spelling of 812159041 in words is "eight hundred twelve million, one hundred fifty-nine thousand, forty-one".