204638349 has 8 divisors (see below), whose sum is σ = 274376160. Its totient is φ = 135663056.

The previous prime is 204638321. The next prime is 204638351. The reversal of 204638349 is 943836402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204638349 - 2⁹ = 204637837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204638549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190002 + ... + 191075.

It is an arithmetic number, because the mean of its divisors is an integer number (34297020).

Almost surely, 2^204638349 is an apocalyptic number.

It is an amenable number.

204638349 is a deficient number, since it is larger than the sum of its proper divisors (69737811).

204638349 is a wasteful number, since it uses less digits than its factorization.

204638349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381259.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 204638349 is about 14305.1860875698. The cubic root of 204638349 is about 589.2899137069.

The spelling of 204638349 in words is "two hundred four million, six hundred thirty-eight thousand, three hundred forty-nine".