204538361 has 4 divisors (see below), whose sum is σ = 206010000. Its totient is φ = 203066724.

The previous prime is 204538357. The next prime is 204538393. The reversal of 204538361 is 163835402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204538361 - 2² = 204538357 is a prime.

It is a super-2 number, since 2×204538361² = 83671882241132642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204538261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735611 + ... + 735888.

It is an arithmetic number, because the mean of its divisors is an integer number (51502500).

Almost surely, 2^204538361 is an apocalyptic number.

It is an amenable number.

204538361 is a deficient number, since it is larger than the sum of its proper divisors (1471639).

204538361 is a wasteful number, since it uses less digits than its factorization.

204538361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471638.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 204538361 is about 14301.6908440925. The cubic root of 204538361 is about 589.1939207526.

The spelling of 204538361 in words is "two hundred four million, five hundred thirty-eight thousand, three hundred sixty-one".