206384157 has 12 divisors (see below), whose sum is σ = 340697760. Its totient is φ = 117933768.

The previous prime is 206384153. The next prime is 206384161. The reversal of 206384157 is 751483602.

206384157 is a `hidden beast` number, since 2 + 0 + 638 + 4 + 15 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (206384153) and next prime (206384161).

It is not a de Polignac number, because 206384157 - 2² = 206384153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206384153) 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 11 ways as a sum of consecutive naturals, for example, 1637907 + ... + 1638032.

It is an arithmetic number, because the mean of its divisors is an integer number (28391480).

Almost surely, 2^206384157 is an apocalyptic number.

It is an amenable number.

206384157 is a deficient number, since it is larger than the sum of its proper divisors (134313603).

206384157 is a wasteful number, since it uses less digits than its factorization.

206384157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275952 (or 3275949 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 206384157 is about 14366.0766042786. The cubic root of 206384157 is about 590.9609514943.

The spelling of 206384157 in words is "two hundred six million, three hundred eighty-four thousand, one hundred fifty-seven".