204081901 has 8 divisors (see below), whose sum is σ = 205342200. Its totient is φ = 202825728.

The previous prime is 204081877. The next prime is 204081929. The reversal of 204081901 is 109180402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 148206276 + 55875625 = 12174^2 + 7475^2 .

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 204081901 - 2⁹ = 204081389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204081931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194025 + ... + 195073.

It is an arithmetic number, because the mean of its divisors is an integer number (25667775).

Almost surely, 2^204081901 is an apocalyptic number.

It is an amenable number.

204081901 is a deficient number, since it is larger than the sum of its proper divisors (1260299).

204081901 is a wasteful number, since it uses less digits than its factorization.

204081901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 204081901 is about 14285.7236778541. The cubic root of 204081901 is about 588.7553008810.

The spelling of 204081901 in words is "two hundred four million, eighty-one thousand, nine hundred one".