1889412344512 has 224 divisors, whose sum is σ = 4761194480640. Its totient is φ = 722566656000.

The previous prime is 1889412344497. The next prime is 1889412344539. The reversal of 1889412344512 is 2154432149881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 1889412344512.

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, 80112562 + ... + 80136142.

Almost surely, 2^{1889412344512} 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 1889412344512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2380597240320).

1889412344512 is an abundant number, since it is smaller than the sum of its proper divisors (2871782136128).

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

1889412344512 is a wasteful number, since it uses less digits than its factorization.

1889412344512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23911 (or 23901 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 52.

The spelling of 1889412344512 in words is "one trillion, eight hundred eighty-nine billion, four hundred twelve million, three hundred forty-four thousand, five hundred twelve".