1898394371328 has 432 divisors, whose sum is σ = 6336478653120. Its totient is φ = 500123860992.

The previous prime is 1898394371327. The next prime is 1898394371333. The reversal of 1898394371328 is 8231734938981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898394371327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 639403828 + ... + 639406796.

It is an arithmetic number, because the mean of its divisors is an integer number (14667774660).

Almost surely, 2^{1898394371328} 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 1898394371328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3168239326560).

1898394371328 is an abundant number, since it is smaller than the sum of its proper divisors (4438084281792).

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

1898394371328 is a wasteful number, since it uses less digits than its factorization.

1898394371328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322 (or 4301 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 66.

The spelling of 1898394371328 in words is "one trillion, eight hundred ninety-eight billion, three hundred ninety-four million, three hundred seventy-one thousand, three hundred twenty-eight".