198602990208 has 768 divisors, whose sum is σ = 705996345600. Its totient is φ = 54392684544.

The previous prime is 198602990203. The next prime is 198602990233. The reversal of 198602990208 is 802099206891.

198602990208 is a `hidden beast` number, since 1 + 9 + 8 + 602 + 9 + 9 + 0 + 20 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (198602990203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 716978166 + ... + 716978442.

It is an arithmetic number, because the mean of its divisors is an integer number (919266075).

Almost surely, 2^198602990208 is an apocalyptic number.

198602990208 is a gapful number since it is divisible by the number (18) 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 198602990208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352998172800).

198602990208 is an abundant number, since it is smaller than the sum of its proper divisors (507393355392).

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

198602990208 is an equidigital number, since it uses as much as digits as its factorization.

198602990208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 198602990208 in words is "one hundred ninety-eight billion, six hundred two million, nine hundred ninety thousand, two hundred eight".