205227819 has 24 divisors (see below), whose sum is σ = 304931952. Its totient is φ = 132949440.

The previous prime is 205227787. The next prime is 205227821. The reversal of 205227819 is 918722502.

It is not a de Polignac number, because 205227819 - 2⁵ = 205227787 is a prime.

It is a super-2 number, since 2×205227819² = 84236915382993522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205227829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49029 + ... + 53049.

It is an arithmetic number, because the mean of its divisors is an integer number (12705498).

Almost surely, 2^205227819 is an apocalyptic number.

205227819 is a deficient number, since it is larger than the sum of its proper divisors (99704133).

205227819 is a wasteful number, since it uses less digits than its factorization.

205227819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187 (or 4184 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 205227819 is about 14325.7746387412. The cubic root of 205227819 is about 589.8551966769.

The spelling of 205227819 in words is "two hundred five million, two hundred twenty-seven thousand, eight hundred nineteen".