198441663 has 32 divisors (see below), whose sum is σ = 324725760. Its totient is φ = 105208320.

The previous prime is 198441613. The next prime is 198441701. The reversal of 198441663 is 366144891.

It is not a de Polignac number, because 198441663 - 2¹⁷ = 198310591 is a prime.

It is a super-2 number, since 2×198441663² = 78758187228411138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198441613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21433 + ... + 29261.

It is an arithmetic number, because the mean of its divisors is an integer number (10147680).

Almost surely, 2^198441663 is an apocalyptic number.

198441663 is a deficient number, since it is larger than the sum of its proper divisors (126284097).

198441663 is a wasteful number, since it uses less digits than its factorization.

198441663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927.

The product of its digits is 124416, while the sum is 42.

The square root of 198441663 is about 14086.9323488118. The cubic root of 198441663 is about 583.2807172860.

The spelling of 198441663 in words is "one hundred ninety-eight million, four hundred forty-one thousand, six hundred sixty-three".