1608899894784 has 800 divisors, whose sum is σ = 5969152949760. Its totient is φ = 420104060928.

The previous prime is 1608899894783. The next prime is 1608899894801. The reversal of 1608899894784 is 4874989988061.

It is a happy number.

1608899894784 is a `hidden beast` number, since 1 + 60 + 8 + 8 + 9 + 9 + 89 + 478 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608899894783) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 388714987 + ... + 388719125.

Almost surely, 2^{1608899894784} is an apocalyptic number.

1608899894784 is a gapful number since it is divisible by the number (14) 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 1608899894784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2984576474880).

1608899894784 is an abundant number, since it is smaller than the sum of its proper divisors (4360253054976).

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

1608899894784 is a wasteful number, since it uses less digits than its factorization.

1608899894784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 2006581248, while the sum is 81.

The spelling of 1608899894784 in words is "one trillion, six hundred eight billion, eight hundred ninety-nine million, eight hundred ninety-four thousand, seven hundred eighty-four".