208116369 has 18 divisors (see below), whose sum is σ = 308355138. Its totient is φ = 135180000.

The previous prime is 208116343. The next prime is 208116401. The reversal of 208116369 is 963611802.

208116369 is a `hidden beast` number, since 2 + 0 + 8 + 11 + 636 + 9 = 666.

208116369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126900225 + 81216144 = 11265^2 + 9012^2 .

It is not a de Polignac number, because 208116369 - 2⁷ = 208116241 is a prime.

It is a super-2 number, since 2×208116369² = 86624846091488322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208116869) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 276744 + ... + 277494.

It is an arithmetic number, because the mean of its divisors is an integer number (17130841).

Almost surely, 2^208116369 is an apocalyptic number.

It is an amenable number.

208116369 is a deficient number, since it is larger than the sum of its proper divisors (100238769).

208116369 is an frugal number, since it uses more digits than its factorization.

208116369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 208116369 is about 14426.2389069362. The cubic root of 208116369 is about 592.6096875386.

The spelling of 208116369 in words is "two hundred eight million, one hundred sixteen thousand, three hundred sixty-nine".