2656658189 has 2 divisors, whose sum is σ = 2656658190. Its totient is φ = 2656658188.

The previous prime is 2656658177. The next prime is 2656658197. The reversal of 2656658189 is 9818566562.

2656658189 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., 2654001289 + 2656900 = 51517^2 + 1630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656658189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656658789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328329094 + 1328329095.

It is an arithmetic number, because the mean of its divisors is an integer number (1328329095).

Almost surely, 2^2656658189 is an apocalyptic number.

It is an amenable number.

2656658189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656658189 is an equidigital number, since it uses as much as digits as its factorization.

2656658189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 56.

The square root of 2656658189 is about 51542.7801830673. The cubic root of 2656658189 is about 1384.9855010277.

The spelling of 2656658189 in words is "two billion, six hundred fifty-six million, six hundred fifty-eight thousand, one hundred eighty-nine".