204806149 has 8 divisors (see below), whose sum is σ = 223020000. Its totient is φ = 187335792.

The previous prime is 204806131. The next prime is 204806159. The reversal of 204806149 is 941608402.

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 204806149 - 2⁵ = 204806117 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 (204806159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185299 + ... + 186400.

It is an arithmetic number, because the mean of its divisors is an integer number (27877500).

Almost surely, 2^204806149 is an apocalyptic number.

204806149 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

204806149 is a deficient number, since it is larger than the sum of its proper divisors (18213851).

204806149 is a wasteful number, since it uses less digits than its factorization.

204806149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371747.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 204806149 is about 14311.0498916047. The cubic root of 204806149 is about 589.4509389707.

The spelling of 204806149 in words is "two hundred four million, eight hundred six thousand, one hundred forty-nine".