1989339220800 has 1344 divisors, whose sum is σ = 7924292812800. Its totient is φ = 484050124800.

The previous prime is 1989339220763. The next prime is 1989339220837. The reversal of 1989339220800 is 80229339891.

1989339220800 is a `hidden beast` number, since 1 + 9 + 8 + 9 + 339 + 220 + 80 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1989339220763) and next prime (1989339220837).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1914666681 + ... + 1914667719.

It is an arithmetic number, because the mean of its divisors is an integer number (5896051200).

Almost surely, 2^{1989339220800} is an apocalyptic number.

1989339220800 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 1989339220800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3962146406400).

1989339220800 is an abundant number, since it is smaller than the sum of its proper divisors (5934953592000).

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

1989339220800 is a wasteful number, since it uses less digits than its factorization.

1989339220800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 1989339220800 in words is "one trillion, nine hundred eighty-nine billion, three hundred thirty-nine million, two hundred twenty thousand, eight hundred".