805162849 has 2 divisors, whose sum is σ = 805162850. Its totient is φ = 805162848.

The previous prime is 805162807. The next prime is 805162861. The reversal of 805162849 is 948261508.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 685654225 + 119508624 = 26185^2 + 10932^2 .

It is a cyclic number.

It is not a de Polignac number, because 805162849 - 2¹⁹ = 804638561 is a prime.

It is not a weakly prime, because it can be changed into another prime (805162949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402581424 + 402581425.

It is an arithmetic number, because the mean of its divisors is an integer number (402581425).

Almost surely, 2^805162849 is an apocalyptic number.

It is an amenable number.

805162849 is a deficient number, since it is larger than the sum of its proper divisors (1).

805162849 is an equidigital number, since it uses as much as digits as its factorization.

805162849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 805162849 is about 28375.3916096325. The cubic root of 805162849 is about 930.3104713590.

The spelling of 805162849 in words is "eight hundred five million, one hundred sixty-two thousand, eight hundred forty-nine".