206193105 has 12 divisors (see below), whose sum is σ = 357401460. Its totient is φ = 109969632.

The previous prime is 206193101. The next prime is 206193107. The reversal of 206193105 is 501391602.

It can be written as a sum of positive squares in 2 ways, for example, as 156575169 + 49617936 = 12513^2 + 7044^2 .

It is not a de Polignac number, because 206193105 - 2² = 206193101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206193101) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2290990 + ... + 2291079.

It is an arithmetic number, because the mean of its divisors is an integer number (29783455).

Almost surely, 2^206193105 is an apocalyptic number.

It is an amenable number.

206193105 is a deficient number, since it is larger than the sum of its proper divisors (151208355).

206193105 is a wasteful number, since it uses less digits than its factorization.

206193105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582080 (or 4582077 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 206193105 is about 14359.4256500739. The cubic root of 206193105 is about 590.7785422594.

The spelling of 206193105 in words is "two hundred six million, one hundred ninety-three thousand, one hundred five".