205674041169 has 9 divisors (see below), whose sum is σ = 297086691369. Its totient is φ = 137115120420.

The previous prime is 205674041147. The next prime is 205674041171. The reversal of 205674041169 is 961140476502.

The square root of 205674041169 is 453513.

It is a perfect power (a square), and thus also a powerful number.

205674041169 is a `hidden beast` number, since 2 + 0 + 567 + 40 + 41 + 1 + 6 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 205674041169 - 2⁵ = 205674041137 is a prime.

It is a super-2 number, since 2×205674041169² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205674041129) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1284954 + ... + 1436124.

Almost surely, 2^205674041169 is an apocalyptic number.

205674041169 is the 453513-rd square number.

205674041169 is the 226757-th centered octagonal number.

It is an amenable number.

205674041169 is a deficient number, since it is larger than the sum of its proper divisors (91412650200).

205674041169 is an frugal number, since it uses more digits than its factorization.

205674041169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302348 (or 151174 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 205674041169 in words is "two hundred five billion, six hundred seventy-four million, forty-one thousand, one hundred sixty-nine".