205618130 has 16 divisors (see below), whose sum is σ = 375326784. Its totient is φ = 81088560.

The previous prime is 205618121. The next prime is 205618163. The reversal of 205618130 is 31816502.

205618130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 205618130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144092 + ... + 145511.

It is an arithmetic number, because the mean of its divisors is an integer number (23457924).

Almost surely, 2^205618130 is an apocalyptic number.

205618130 is a deficient number, since it is larger than the sum of its proper divisors (169708654).

205618130 is a wasteful number, since it uses less digits than its factorization.

205618130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289681.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 205618130 is about 14339.3908517761. The cubic root of 205618130 is about 590.2288971089.

The spelling of 205618130 in words is "two hundred five million, six hundred eighteen thousand, one hundred thirty".