198498816 has 160 divisors (see below), whose sum is σ = 598086720. Its totient is φ = 64991232.

The previous prime is 198498791. The next prime is 198498827. The reversal of 198498816 is 618894891.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147306 + ... + 1147478.

It is an arithmetic number, because the mean of its divisors is an integer number (3738042).

Almost surely, 2^198498816 is an apocalyptic number.

198498816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198498816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299043360).

198498816 is an abundant number, since it is smaller than the sum of its proper divisors (399587904).

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

198498816 is an equidigital number, since it uses as much as digits as its factorization.

198498816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 261 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 198498816 is about 14088.9607849550. The cubic root of 198498816 is about 583.3367086245.

The spelling of 198498816 in words is "one hundred ninety-eight million, four hundred ninety-eight thousand, eight hundred sixteen".