2168886456 has 160 divisors (see below), whose sum is σ = 6678532080. Its totient is φ = 652147200.

The previous prime is 2168886443. The next prime is 2168886491. The reversal of 2168886456 is 6546888612.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 975426 + ... + 977646.

Almost surely, 2^2168886456 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 2168886456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3339266040).

2168886456 is an abundant number, since it is smaller than the sum of its proper divisors (4509645624).

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

2168886456 is a wasteful number, since it uses less digits than its factorization.

2168886456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387 (or 2374 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 2168886456 is about 46571.3050708266. The cubic root of 2168886456 is about 1294.4311004739.

The spelling of 2168886456 in words is "two billion, one hundred sixty-eight million, eight hundred eighty-six thousand, four hundred fifty-six".