1668530752 has 168 divisors, whose sum is σ = 4159239840. Its totient is φ = 659957760.

The previous prime is 1668530737. The next prime is 1668530753. The reversal of 1668530752 is 2570358661.

It is a junction number, because it is equal to n+sod(n) for n = 1668530699 and 1668530708.

It is not an unprimeable number, because it can be changed into a prime (1668530753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2442603 + ... + 2443285.

It is an arithmetic number, because the mean of its divisors is an integer number (24757380).

Almost surely, 2^1668530752 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 1668530752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079619920).

1668530752 is an abundant number, since it is smaller than the sum of its proper divisors (2490709088).

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

1668530752 is a wasteful number, since it uses less digits than its factorization.

1668530752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 1668530752 is about 40847.6529558309. The cubic root of 1668530752 is about 1186.0729603145.

The spelling of 1668530752 in words is "one billion, six hundred sixty-eight million, five hundred thirty thousand, seven hundred fifty-two".