2168568450 has 144 divisors (see below), whose sum is σ = 6398028000. Its totient is φ = 544216320.

The previous prime is 2168568449. The next prime is 2168568461. The reversal of 2168568450 is 548658612.

2168568450 is a `hidden beast` number, since 21 + 68 + 568 + 4 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2168568396 and 2168568405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 201301 + ... + 211799.

It is an arithmetic number, because the mean of its divisors is an integer number (44430750).

Almost surely, 2^2168568450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168568450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3199014000).

2168568450 is an abundant number, since it is smaller than the sum of its proper divisors (4229459550).

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

2168568450 is a wasteful number, since it uses less digits than its factorization.

2168568450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543 (or 10526 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 2168568450 is about 46567.8907617685. The cubic root of 2168568450 is about 1294.3678334496.

The spelling of 2168568450 in words is "two billion, one hundred sixty-eight million, five hundred sixty-eight thousand, four hundred fifty".