198940164384 has 144 divisors (see below), whose sum is σ = 567916326432. Its totient is φ = 60948486144.

The previous prime is 198940164377. The next prime is 198940164389. The reversal of 198940164384 is 483461049891.

It is not an unprimeable number, because it can be changed into a prime (198940164389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3753879 + ... + 3806505.

It is an arithmetic number, because the mean of its divisors is an integer number (3943863378).

Almost surely, 2^198940164384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198940164384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283958163216).

198940164384 is an abundant number, since it is smaller than the sum of its proper divisors (368976162048).

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

198940164384 is a wasteful number, since it uses less digits than its factorization.

198940164384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52899 (or 52878 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The spelling of 198940164384 in words is "one hundred ninety-eight billion, nine hundred forty million, one hundred sixty-four thousand, three hundred eighty-four".