198993027 has 4 divisors (see below), whose sum is σ = 265324040. Its totient is φ = 132662016.

The previous prime is 198992957. The next prime is 198993031. The reversal of 198993027 is 720399891.

198993027 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 is a de Polignac number, because none of the positive numbers 2^k-198993027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198993037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33165502 + ... + 33165507.

It is an arithmetic number, because the mean of its divisors is an integer number (66331010).

Almost surely, 2^198993027 is an apocalyptic number.

198993027 is a deficient number, since it is larger than the sum of its proper divisors (66331013).

198993027 is an equidigital number, since it uses as much as digits as its factorization.

198993027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66331012.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 198993027 is about 14106.4888260687. The cubic root of 198993027 is about 583.8204268604.

The spelling of 198993027 in words is "one hundred ninety-eight million, nine hundred ninety-three thousand, twenty-seven".