205938218 has 4 divisors (see below), whose sum is σ = 308907330. Its totient is φ = 102969108.

The previous prime is 205938217. The next prime is 205938241. The reversal of 205938218 is 812839502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160604929 + 45333289 = 12673^2 + 6733^2 .

It is not an unprimeable number, because it can be changed into a prime (205938211) 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 as a sum of consecutive naturals, namely, 51484553 + ... + 51484556.

Almost surely, 2^205938218 is an apocalyptic number.

205938218 is a deficient number, since it is larger than the sum of its proper divisors (102969112).

205938218 is a wasteful number, since it uses less digits than its factorization.

205938218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102969111.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 205938218 is about 14350.5476550548. The cubic root of 205938218 is about 590.5350102549.

The spelling of 205938218 in words is "two hundred five million, nine hundred thirty-eight thousand, two hundred eighteen".