198790063920 has 600 divisors, whose sum is σ = 806897355264. Its totient is φ = 45225879552.

The previous prime is 198790063891. The next prime is 198790063937. The reversal of 198790063920 is 29360097891.

198790063920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 73980817 + ... + 73983503.

Almost surely, 2^198790063920 is an apocalyptic number.

198790063920 is a gapful number since it is divisible by the number (10) 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 198790063920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403448677632).

198790063920 is an abundant number, since it is smaller than the sum of its proper divisors (608107291344).

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

198790063920 is a wasteful number, since it uses less digits than its factorization.

198790063920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 198790063920 in words is "one hundred ninety-eight billion, seven hundred ninety million, sixty-three thousand, nine hundred twenty".