198444546 has 64 divisors (see below), whose sum is σ = 450489600. Its totient is φ = 64741248.

The previous prime is 198444539. The next prime is 198444557. The reversal of 198444546 is 645444891.

198444546 is a `hidden beast` number, since 198 + 4 + 4 + 454 + 6 = 666.

It is a super-2 number, since 2×198444546² = 78760475674292232, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754411 + ... + 754673.

It is an arithmetic number, because the mean of its divisors is an integer number (7038900).

Almost surely, 2^198444546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198444546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225244800).

198444546 is an abundant number, since it is smaller than the sum of its proper divisors (252045054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198444546 is a wasteful number, since it uses less digits than its factorization.

198444546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 514 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 198444546 is about 14087.0346773194. The cubic root of 198444546 is about 583.2835419451.

The spelling of 198444546 in words is "one hundred ninety-eight million, four hundred forty-four thousand, five hundred forty-six".