204942818 has 4 divisors (see below), whose sum is σ = 307414230. Its totient is φ = 102471408.

The previous prime is 204942799. The next prime is 204942833. The reversal of 204942818 is 818249402.

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., 200307409 + 4635409 = 14153^2 + 2153^2 .

It is a super-2 number, since 2×204942818² = 84003117299562248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51235703 + ... + 51235706.

Almost surely, 2^204942818 is an apocalyptic number.

204942818 is a deficient number, since it is larger than the sum of its proper divisors (102471412).

204942818 is a wasteful number, since it uses less digits than its factorization.

204942818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102471411.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 204942818 is about 14315.8240419474. The cubic root of 204942818 is about 589.5820251352.

The spelling of 204942818 in words is "two hundred four million, nine hundred forty-two thousand, eight hundred eighteen".