2189846679161 has 2 divisors, whose sum is σ = 2189846679162. Its totient is φ = 2189846679160.

The previous prime is 2189846679149. The next prime is 2189846679173. The reversal of 2189846679161 is 1619766489812.

It is a balanced prime because it is at equal distance from previous prime (2189846679149) and next prime (2189846679173).

It can be written as a sum of positive squares in only one way, i.e., 2162608477561 + 27238201600 = 1470581^2 + 165040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189846679161 - 2³⁸ = 1914968772217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2189846679091 and 2189846679100.

It is not a weakly prime, because it can be changed into another prime (2189846679121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094923339580 + 1094923339581.

It is an arithmetic number, because the mean of its divisors is an integer number (1094923339581).

Almost surely, 2^{2189846679161} is an apocalyptic number.

It is an amenable number.

2189846679161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189846679161 is an equidigital number, since it uses as much as digits as its factorization.

2189846679161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 68.

The spelling of 2189846679161 in words is "two trillion, one hundred eighty-nine billion, eight hundred forty-six million, six hundred seventy-nine thousand, one hundred sixty-one".