204561794 has 4 divisors (see below), whose sum is σ = 306842694. Its totient is φ = 102280896.

The previous prime is 204561767. The next prime is 204561803. The reversal of 204561794 is 497165402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 497165402 = 2 ⋅248582701.

It can be written as a sum of positive squares in only one way, i.e., 202350625 + 2211169 = 14225^2 + 1487^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51140447 + ... + 51140450.

Almost surely, 2^204561794 is an apocalyptic number.

204561794 is a deficient number, since it is larger than the sum of its proper divisors (102280900).

204561794 is a wasteful number, since it uses less digits than its factorization.

204561794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102280899.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 204561794 is about 14302.5100594266. The cubic root of 204561794 is about 589.2164202874.

The spelling of 204561794 in words is "two hundred four million, five hundred sixty-one thousand, seven hundred ninety-four".