205612193 has 4 divisors (see below), whose sum is σ = 205663920. Its totient is φ = 205560468.

The previous prime is 205612189. The next prime is 205612207. The reversal of 205612193 is 391216502.

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: 391216502 = 2 ⋅195608251.

It is a cyclic number.

It is not a de Polignac number, because 205612193 - 2² = 205612189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205612793) 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, 19355 + ... + 28032.

It is an arithmetic number, because the mean of its divisors is an integer number (51415980).

Almost surely, 2^205612193 is an apocalyptic number.

It is an amenable number.

205612193 is a deficient number, since it is larger than the sum of its proper divisors (51727).

205612193 is an equidigital number, since it uses as much as digits as its factorization.

205612193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51726.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 205612193 is about 14339.1838331197. The cubic root of 205612193 is about 590.2232163149.

Adding to 205612193 its reverse (391216502), we get a palindrome (596828695).

The spelling of 205612193 in words is "two hundred five million, six hundred twelve thousand, one hundred ninety-three".