2209740161 has 2 divisors, whose sum is σ = 2209740162. Its totient is φ = 2209740160.

The previous prime is 2209740151. The next prime is 2209740229. The reversal of 2209740161 is 1610479022.

It is a happy number.

2209740161 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., 2003099536 + 206640625 = 44756^2 + 14375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209740161 - 2¹⁰ = 2209739137 is a prime.

It is not a weakly prime, because it can be changed into another prime (2209740151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104870080 + 1104870081.

It is an arithmetic number, because the mean of its divisors is an integer number (1104870081).

Almost surely, 2^2209740161 is an apocalyptic number.

It is an amenable number.

2209740161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209740161 is an equidigital number, since it uses as much as digits as its factorization.

2209740161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2209740161 is about 47007.8733937199. The cubic root of 2209740161 is about 1302.5080106050.

The spelling of 2209740161 in words is "two billion, two hundred nine million, seven hundred forty thousand, one hundred sixty-one".