204983138 has 4 divisors (see below), whose sum is σ = 307474710. Its totient is φ = 102491568.

The previous prime is 204983137. The next prime is 204983173. The reversal of 204983138 is 831389402.

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., 165456769 + 39526369 = 12863^2 + 6287^2 .

It is not an unprimeable number, because it can be changed into a prime (204983137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51245783 + ... + 51245786.

Almost surely, 2^204983138 is an apocalyptic number.

204983138 is a deficient number, since it is larger than the sum of its proper divisors (102491572).

204983138 is a wasteful number, since it uses less digits than its factorization.

204983138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102491571.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 204983138 is about 14317.2322045848. The cubic root of 204983138 is about 589.6206869576.

The spelling of 204983138 in words is "two hundred four million, nine hundred eighty-three thousand, one hundred thirty-eight".