208144243 has 16 divisors (see below), whose sum is σ = 224894880. Its totient is φ = 191932416.

The previous prime is 208144219. The next prime is 208144301. The reversal of 208144243 is 342441802.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 208144243 - 2²¹ = 206047091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208144213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221671 + ... + 222607.

It is an arithmetic number, because the mean of its divisors is an integer number (14055930).

Almost surely, 2^208144243 is an apocalyptic number.

208144243 is a deficient number, since it is larger than the sum of its proper divisors (16750637).

208144243 is a wasteful number, since it uses less digits than its factorization.

208144243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 208144243 is about 14427.2049614608. The cubic root of 208144243 is about 592.6361433545.

The spelling of 208144243 in words is "two hundred eight million, one hundred forty-four thousand, two hundred forty-three".