947116081 has 2 divisors, whose sum is σ = 947116082. Its totient is φ = 947116080.

The previous prime is 947116063. The next prime is 947116091. The reversal of 947116081 is 180611749.

947116081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 946116081 + 1000000 = 30759^2 + 1000^2 .

It is an emirp because it is prime and its reverse (180611749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947116081 - 2²³ = 938727473 is a prime.

It is a super-2 number, since 2×947116081² = 1794057741777597122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947116081.

It is not a weakly prime, because it can be changed into another prime (947116021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473558040 + 473558041.

It is an arithmetic number, because the mean of its divisors is an integer number (473558041).

Almost surely, 2^947116081 is an apocalyptic number.

It is an amenable number.

947116081 is a deficient number, since it is larger than the sum of its proper divisors (1).

947116081 is an equidigital number, since it uses as much as digits as its factorization.

947116081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 947116081 is about 30775.2511118918. The cubic root of 947116081 is about 982.0518169861.

It can be divided in two parts, 9471 and 16081, that added together give a palindrome (25552).

The spelling of 947116081 in words is "nine hundred forty-seven million, one hundred sixteen thousand, eighty-one".