204168994 has 4 divisors (see below), whose sum is σ = 306253494. Its totient is φ = 102084496.

The previous prime is 204168989. The next prime is 204169001. The reversal of 204168994 is 499861402.

204168994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 204118369 + 50625 = 14287^2 + 225^2 .

It is a super-2 number, since 2×204168994² = 83369956221944072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204168994.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51042247 + ... + 51042250.

Almost surely, 2^204168994 is an apocalyptic number.

204168994 is a deficient number, since it is larger than the sum of its proper divisors (102084500).

204168994 is a wasteful number, since it uses less digits than its factorization.

204168994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102084499.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 204168994 is about 14288.7716057049. The cubic root of 204168994 is about 588.8390404201.

The spelling of 204168994 in words is "two hundred four million, one hundred sixty-eight thousand, nine hundred ninety-four".