849701081 has 2 divisors, whose sum is σ = 849701082. Its totient is φ = 849701080.

The previous prime is 849701063. The next prime is 849701117. The reversal of 849701081 is 180107948.

849701081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845879056 + 3822025 = 29084^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 849701081 - 2¹⁰ = 849700057 is a prime.

It is a super-2 number, since 2×849701081² = 1443983854105137122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (849701051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424850540 + 424850541.

It is an arithmetic number, because the mean of its divisors is an integer number (424850541).

Almost surely, 2^849701081 is an apocalyptic number.

It is an amenable number.

849701081 is a deficient number, since it is larger than the sum of its proper divisors (1).

849701081 is an equidigital number, since it uses as much as digits as its factorization.

849701081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 849701081 is about 29149.6326048889. The cubic root of 849701081 is about 947.1571824121.

The spelling of 849701081 in words is "eight hundred forty-nine million, seven hundred one thousand, eighty-one".