205819130 has 16 divisors (see below), whose sum is σ = 404154144. Its totient is φ = 74843280.

The previous prime is 205819127. The next prime is 205819151. The reversal of 205819130 is 31918502.

It is a junction number, because it is equal to n+sod(n) for n = 205819093 and 205819102.

It is an unprimeable number.

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, 935432 + ... + 935651.

It is an arithmetic number, because the mean of its divisors is an integer number (25259634).

Almost surely, 2^205819130 is an apocalyptic number.

205819130 is a deficient number, since it is larger than the sum of its proper divisors (198335014).

205819130 is a wasteful number, since it uses less digits than its factorization.

205819130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871101.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 205819130 is about 14346.3978057211. The cubic root of 205819130 is about 590.4211586443.

The spelling of 205819130 in words is "two hundred five million, eight hundred nineteen thousand, one hundred thirty".