205238386 has 4 divisors (see below), whose sum is σ = 307857582. Its totient is φ = 102619192.

The previous prime is 205238381. The next prime is 205238413. The reversal of 205238386 is 683832502.

205238386 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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., 205205625 + 32761 = 14325^2 + 181^2 .

It is not an unprimeable number, because it can be changed into a prime (205238381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51309595 + ... + 51309598.

Almost surely, 2^205238386 is an apocalyptic number.

205238386 is a deficient number, since it is larger than the sum of its proper divisors (102619196).

205238386 is a wasteful number, since it uses less digits than its factorization.

205238386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102619195.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 205238386 is about 14326.1434447656. The cubic root of 205238386 is about 589.8653202117.

The spelling of 205238386 in words is "two hundred five million, two hundred thirty-eight thousand, three hundred eighty-six".