16193903616 has 220 divisors, whose sum is σ = 52757331000. Its totient is φ = 4906967040.

The previous prime is 16193903599. The next prime is 16193903647. The reversal of 16193903616 is 61630939161.

It is a happy number.

16193903616 is a `hidden beast` number, since 16 + 19 + 3 + 9 + 0 + 3 + 616 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 903510 + ... + 921258.

It is an arithmetic number, because the mean of its divisors is an integer number (239806050).

Almost surely, 2^16193903616 is an apocalyptic number.

16193903616 is a gapful number since it is divisible by the number (16) 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 16193903616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26378665500).

16193903616 is an abundant number, since it is smaller than the sum of its proper divisors (36563427384).

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

16193903616 is a wasteful number, since it uses less digits than its factorization.

16193903616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17792 (or 17765 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 16193903616 in words is "sixteen billion, one hundred ninety-three million, nine hundred three thousand, six hundred sixteen".