204168993 has 8 divisors (see below), whose sum is σ = 311114688. Its totient is φ = 116667984.

The previous prime is 204168989. The next prime is 204169001. The reversal of 204168993 is 399861402.

204168993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204168993 - 2² = 204168989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204168973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4861146 + ... + 4861187.

It is an arithmetic number, because the mean of its divisors is an integer number (38889336).

Almost surely, 2^204168993 is an apocalyptic number.

It is an amenable number.

204168993 is a deficient number, since it is larger than the sum of its proper divisors (106945695).

204168993 is an equidigital number, since it uses as much as digits as its factorization.

204168993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722343.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 204168993 is about 14288.7715707124. The cubic root of 204168993 is about 588.8390394588.

The spelling of 204168993 in words is "two hundred four million, one hundred sixty-eight thousand, nine hundred ninety-three".