205923219 has 4 divisors (see below), whose sum is σ = 274564296. Its totient is φ = 137282144.

The previous prime is 205923203. The next prime is 205923233. The reversal of 205923219 is 912329502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205923219 - 2⁴ = 205923203 is a prime.

It is a super-2 number, since 2×205923219² = 84808744246643922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205923219.

It is not an unprimeable number, because it can be changed into a prime (205923269) 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, 34320534 + ... + 34320539.

It is an arithmetic number, because the mean of its divisors is an integer number (68641074).

Almost surely, 2^205923219 is an apocalyptic number.

205923219 is a deficient number, since it is larger than the sum of its proper divisors (68641077).

205923219 is an equidigital number, since it uses as much as digits as its factorization.

205923219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68641076.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 205923219 is about 14350.0250522429. The cubic root of 205923219 is about 590.5206731886.

The spelling of 205923219 in words is "two hundred five million, nine hundred twenty-three thousand, two hundred nineteen".