204985190 has 16 divisors (see below), whose sum is σ = 369168192. Its totient is φ = 81950784.

The previous prime is 204985181. The next prime is 204985219. The reversal of 204985190 is 91589402.

It is a super-2 number, since 2×204985190² = 84037856238672200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20282 + ... + 28658.

It is an arithmetic number, because the mean of its divisors is an integer number (23073012).

Almost surely, 2^204985190 is an apocalyptic number.

204985190 is a deficient number, since it is larger than the sum of its proper divisors (164183002).

204985190 is a wasteful number, since it uses less digits than its factorization.

204985190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10831.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 204985190 is about 14317.3038663011. The cubic root of 204985190 is about 589.6226544326.

The spelling of 204985190 in words is "two hundred four million, nine hundred eighty-five thousand, one hundred ninety".