2789161 has 2 divisors, whose sum is σ = 2789162. Its totient is φ = 2789160.

The previous prime is 2789123. The next prime is 2789167. The reversal of 2789161 is 1619872.

It is a happy number.

2789161 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., 2785561 + 3600 = 1669^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 2789161 - 2²¹ = 692009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2789167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394580 + 1394581.

It is an arithmetic number, because the mean of its divisors is an integer number (1394581).

2^2789161 is an apocalyptic number.

It is an amenable number.

2789161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2789161 is an equidigital number, since it uses as much as digits as its factorization.

2789161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 2789161 is about 1670.0781418844. The cubic root of 2789161 is about 140.7638688121.

The spelling of 2789161 in words is "two million, seven hundred eighty-nine thousand, one hundred sixty-one".