204148905 has 8 divisors (see below), whose sum is σ = 326638272. Its totient is φ = 108879408.

The previous prime is 204148891. The next prime is 204148949. The reversal of 204148905 is 509841402.

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

It is not a de Polignac number, because 204148905 - 2⁵ = 204148873 is a prime.

It is an unprimeable number.

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, 6804949 + ... + 6804978.

It is an arithmetic number, because the mean of its divisors is an integer number (40829784).

Almost surely, 2^204148905 is an apocalyptic number.

It is an amenable number.

204148905 is a deficient number, since it is larger than the sum of its proper divisors (122489367).

204148905 is a wasteful number, since it uses less digits than its factorization.

204148905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13609935.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 204148905 is about 14288.0686238554. The cubic root of 204148905 is about 588.8197270477.

The spelling of 204148905 in words is "two hundred four million, one hundred forty-eight thousand, nine hundred five".