208198590133 has 2 divisors, whose sum is σ = 208198590134. Its totient is φ = 208198590132.

The previous prime is 208198590107. The next prime is 208198590161. The reversal of 208198590133 is 331095891802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188766787729 + 19431802404 = 434473^2 + 139398^2 .

It is a cyclic number.

It is not a de Polignac number, because 208198590133 - 2³³ = 199608655541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208198593133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104099295066 + 104099295067.

It is an arithmetic number, because the mean of its divisors is an integer number (104099295067).

Almost surely, 2^208198590133 is an apocalyptic number.

It is an amenable number.

208198590133 is a deficient number, since it is larger than the sum of its proper divisors (1).

208198590133 is an equidigital number, since it uses as much as digits as its factorization.

208198590133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 208198590133 in words is "two hundred eight billion, one hundred ninety-eight million, five hundred ninety thousand, one hundred thirty-three".