198674423 has 4 divisors (see below), whose sum is σ = 204044040. Its totient is φ = 193304808.

The previous prime is 198674419. The next prime is 198674449. The reversal of 198674423 is 324476891.

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

It is a cyclic number.

It is not a de Polignac number, because 198674423 - 2² = 198674419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198674323) 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, 2684753 + ... + 2684826.

It is an arithmetic number, because the mean of its divisors is an integer number (51011010).

Almost surely, 2^198674423 is an apocalyptic number.

198674423 is a deficient number, since it is larger than the sum of its proper divisors (5369617).

198674423 is an equidigital number, since it uses as much as digits as its factorization.

198674423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369616.

The product of its digits is 290304, while the sum is 44.

The square root of 198674423 is about 14095.1914850420. The cubic root of 198674423 is about 583.5086791147.

The spelling of 198674423 in words is "one hundred ninety-eight million, six hundred seventy-four thousand, four hundred twenty-three".