205813293 has 8 divisors (see below), whose sum is σ = 313620288. Its totient is φ = 117607584.

The previous prime is 205813291. The next prime is 205813303. The reversal of 205813293 is 392318502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205813293 - 2¹ = 205813291 is a prime.

It is a super-2 number, since 2×205813293² = 84718223151007698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205813291) 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 7 ways as a sum of consecutive naturals, for example, 4900296 + ... + 4900337.

It is an arithmetic number, because the mean of its divisors is an integer number (39202536).

Almost surely, 2^205813293 is an apocalyptic number.

It is an amenable number.

205813293 is a deficient number, since it is larger than the sum of its proper divisors (107806995).

205813293 is an equidigital number, since it uses as much as digits as its factorization.

205813293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9800643.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 205813293 is about 14346.1943734218. The cubic root of 205813293 is about 590.4155771727.

It can be divided in two parts, 2058 and 13293, that added together give a palindrome (15351).

The spelling of 205813293 in words is "two hundred five million, eight hundred thirteen thousand, two hundred ninety-three".