198453841 has 4 divisors (see below), whose sum is σ = 208898800. Its totient is φ = 188008884.

The previous prime is 198453839. The next prime is 198453851. The reversal of 198453841 is 148354891.

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 198453841 - 2¹ = 198453839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198453851) 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, 5222451 + ... + 5222488.

It is an arithmetic number, because the mean of its divisors is an integer number (52224700).

Almost surely, 2^198453841 is an apocalyptic number.

It is an amenable number.

198453841 is a deficient number, since it is larger than the sum of its proper divisors (10444959).

198453841 is a wasteful number, since it uses less digits than its factorization.

198453841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10444958.

The product of its digits is 138240, while the sum is 43.

The square root of 198453841 is about 14087.3645867494. The cubic root of 198453841 is about 583.2926486636.

The spelling of 198453841 in words is "one hundred ninety-eight million, four hundred fifty-three thousand, eight hundred forty-one".