1898322563982 has 64 divisors (see below), whose sum is σ = 4239781056000. Its totient is φ = 562611654528.

The previous prime is 1898322563947. The next prime is 1898322563993. The reversal of 1898322563982 is 2893652238981.

It is a happy number.

It is a super-3 number, since 3×1898322563982³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53682 + ... + 1949237.

It is an arithmetic number, because the mean of its divisors is an integer number (66246579000).

Almost surely, 2^{1898322563982} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898322563982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2119890528000).

1898322563982 is an abundant number, since it is smaller than the sum of its proper divisors (2341458492018).

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

1898322563982 is a wasteful number, since it uses less digits than its factorization.

1898322563982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003385.

The product of its digits is 89579520, while the sum is 66.

The spelling of 1898322563982 in words is "one trillion, eight hundred ninety-eight billion, three hundred twenty-two million, five hundred sixty-three thousand, nine hundred eighty-two".