2208434561 has 2 divisors, whose sum is σ = 2208434562. Its totient is φ = 2208434560.

The previous prime is 2208434491. The next prime is 2208434603. The reversal of 2208434561 is 1654348022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1536640000 + 671794561 = 39200^2 + 25919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2208434561 is a prime.

It is not a weakly prime, because it can be changed into another prime (2208434161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104217280 + 1104217281.

It is an arithmetic number, because the mean of its divisors is an integer number (1104217281).

Almost surely, 2^2208434561 is an apocalyptic number.

It is an amenable number.

2208434561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2208434561 is an equidigital number, since it uses as much as digits as its factorization.

2208434561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2208434561 is about 46993.9843065046. The cubic root of 2208434561 is about 1302.2514360212.

The spelling of 2208434561 in words is "two billion, two hundred eight million, four hundred thirty-four thousand, five hundred sixty-one".