206119849 has 24 divisors (see below), whose sum is σ = 243636120. Its totient is φ = 172741632.

The previous prime is 206119841. The next prime is 206119861. The reversal of 206119849 is 948911602.

It can be written as a sum of positive squares in 12 ways, for example, as 94711824 + 111408025 = 9732^2 + 10555^2 .

It is not a de Polignac number, because 206119849 - 2³ = 206119841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206119841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185307 + ... + 186415.

It is an arithmetic number, because the mean of its divisors is an integer number (10151505).

Almost surely, 2^206119849 is an apocalyptic number.

206119849 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

206119849 is a deficient number, since it is larger than the sum of its proper divisors (37516271).

206119849 is a wasteful number, since it uses less digits than its factorization.

206119849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 206119849 is about 14356.8746250707. The cubic root of 206119849 is about 590.7085703122.

The spelling of 206119849 in words is "two hundred six million, one hundred nineteen thousand, eight hundred forty-nine".