208986541 has 2 divisors, whose sum is σ = 208986542. Its totient is φ = 208986540.

The previous prime is 208986539. The next prime is 208986563. The reversal of 208986541 is 145689802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208802500 + 184041 = 14450^2 + 429^2 .

It is a cyclic number.

It is not a de Polignac number, because 208986541 - 2¹ = 208986539 is a prime.

Together with 208986539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208986511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104493270 + 104493271.

It is an arithmetic number, because the mean of its divisors is an integer number (104493271).

Almost surely, 2^208986541 is an apocalyptic number.

It is an amenable number.

208986541 is a deficient number, since it is larger than the sum of its proper divisors (1).

208986541 is an equidigital number, since it uses as much as digits as its factorization.

208986541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 208986541 is about 14456.3667980582. The cubic root of 208986541 is about 593.4344750009.

The spelling of 208986541 in words is "two hundred eight million, nine hundred eighty-six thousand, five hundred forty-one".