208114861 has 2 divisors, whose sum is σ = 208114862. Its totient is φ = 208114860.

The previous prime is 208114849. The next prime is 208114871. The reversal of 208114861 is 168411802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113422500 + 94692361 = 10650^2 + 9731^2 .

It is a cyclic number.

It is not a de Polignac number, because 208114861 - 2¹¹ = 208112813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208114801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104057430 + 104057431.

It is an arithmetic number, because the mean of its divisors is an integer number (104057431).

Almost surely, 2^208114861 is an apocalyptic number.

It is an amenable number.

208114861 is a deficient number, since it is larger than the sum of its proper divisors (1).

208114861 is an equidigital number, since it uses as much as digits as its factorization.

208114861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 208114861 is about 14426.1866409665. The cubic root of 208114861 is about 592.6082561959.

The spelling of 208114861 in words is "two hundred eight million, one hundred fourteen thousand, eight hundred sixty-one".