206168893 has 4 divisors (see below), whose sum is σ = 235621600. Its totient is φ = 176716188.

The previous prime is 206168873. The next prime is 206168899. The reversal of 206168893 is 398861602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 398861602 = 2 ⋅199430801.

It is a cyclic number.

It is not a de Polignac number, because 206168893 - 2⁵ = 206168861 is a prime.

It is a super-2 number, since 2×206168893² = 85011224881690898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206168899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14726343 + ... + 14726356.

It is an arithmetic number, because the mean of its divisors is an integer number (58905400).

Almost surely, 2^206168893 is an apocalyptic number.

It is an amenable number.

206168893 is a deficient number, since it is larger than the sum of its proper divisors (29452707).

206168893 is an equidigital number, since it uses as much as digits as its factorization.

206168893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29452706.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 206168893 is about 14358.5825553917. The cubic root of 206168893 is about 590.7554175127.

The spelling of 206168893 in words is "two hundred six million, one hundred sixty-eight thousand, eight hundred ninety-three".