16918894080 has 480 divisors, whose sum is σ = 64418653728. Its totient is φ = 4069785600.

The previous prime is 16918894063. The next prime is 16918894121. The reversal of 16918894080 is 8049881961.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61078902 + ... + 61079178.

Almost surely, 2^16918894080 is an apocalyptic number.

16918894080 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 16918894080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32209326864).

16918894080 is an abundant number, since it is smaller than the sum of its proper divisors (47499759648).

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

16918894080 is a wasteful number, since it uses less digits than its factorization.

16918894080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The spelling of 16918894080 in words is "sixteen billion, nine hundred eighteen million, eight hundred ninety-four thousand, eighty".