198453361 has 4 divisors (see below), whose sum is σ = 207081792. Its totient is φ = 189824932.

The previous prime is 198453349. The next prime is 198453371. The reversal of 198453361 is 163354891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198453361 - 2⁵ = 198453329 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198453301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4314181 + ... + 4314226.

It is an arithmetic number, because the mean of its divisors is an integer number (51770448).

Almost surely, 2^198453361 is an apocalyptic number.

It is an amenable number.

198453361 is a deficient number, since it is larger than the sum of its proper divisors (8628431).

198453361 is an equidigital number, since it uses as much as digits as its factorization.

198453361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8628430.

The product of its digits is 77760, while the sum is 40.

The square root of 198453361 is about 14087.3475501955. The cubic root of 198453361 is about 583.2921783936.

The spelling of 198453361 in words is "one hundred ninety-eight million, four hundred fifty-three thousand, three hundred sixty-one".