19016143056 has 120 divisors (see below), whose sum is σ = 54295058376. Its totient is φ = 6210846720.

The previous prime is 19016143051. The next prime is 19016143057. The reversal of 19016143056 is 65034161091.

19016143056 is a `hidden beast` number, since 1 + 9 + 0 + 1 + 614 + 30 + 5 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8383233600 + 10632909456 = 91560^2 + 103116^2 .

It is a super-2 number, since 2×19016143056² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19016143056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19016143051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8798616 + ... + 8800776.

Almost surely, 2^19016143056 is an apocalyptic number.

19016143056 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 19016143056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27147529188).

19016143056 is an abundant number, since it is smaller than the sum of its proper divisors (35278915320).

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

19016143056 is a wasteful number, since it uses less digits than its factorization.

19016143056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381 (or 3372 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 19016143056 in words is "nineteen billion, sixteen million, one hundred forty-three thousand, fifty-six".