206293091 has 2 divisors, whose sum is σ = 206293092. Its totient is φ = 206293090.

The previous prime is 206293069. The next prime is 206293117. The reversal of 206293091 is 190392602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206293091 - 2⁶ = 206293027 is a prime.

It is not a weakly prime, because it can be changed into another prime (206293391) 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 as a sum of consecutive naturals, namely, 103146545 + 103146546.

It is an arithmetic number, because the mean of its divisors is an integer number (103146546).

Almost surely, 2^206293091 is an apocalyptic number.

206293091 is a deficient number, since it is larger than the sum of its proper divisors (1).

206293091 is an equidigital number, since it uses as much as digits as its factorization.

206293091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 206293091 is about 14362.9067740482. The cubic root of 206293091 is about 590.8740191636.

The spelling of 206293091 in words is "two hundred six million, two hundred ninety-three thousand, ninety-one".