205112164 has 12 divisors (see below), whose sum is σ = 368647804. Its totient is φ = 99784224.

The previous prime is 205112161. The next prime is 205112189. The reversal of 205112164 is 461211502.

It can be written as a sum of positive squares in 2 ways, for example, as 91049764 + 114062400 = 9542^2 + 10680^2 .

It is not an unprimeable number, because it can be changed into a prime (205112161) 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 3 ways as a sum of consecutive naturals, for example, 692799 + ... + 693094.

Almost surely, 2^205112164 is an apocalyptic number.

It is an amenable number.

205112164 is a deficient number, since it is larger than the sum of its proper divisors (163535640).

205112164 is a wasteful number, since it uses less digits than its factorization.

205112164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385934 (or 1385932 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 205112164 is about 14321.7374644280. The cubic root of 205112164 is about 589.7443726472.

Adding to 205112164 its reverse (461211502), we get a palindrome (666323666).

The spelling of 205112164 in words is "two hundred five million, one hundred twelve thousand, one hundred sixty-four".