1668008430 has 128 divisors (see below), whose sum is σ = 4866877440. Its totient is φ = 403159680.

The previous prime is 1668008429. The next prime is 1668008437. The reversal of 1668008430 is 348008661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668008437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1374504 + ... + 1375716.

It is an arithmetic number, because the mean of its divisors is an integer number (38022480).

Almost surely, 2^1668008430 is an apocalyptic number.

1668008430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668008430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2433438720).

1668008430 is an abundant number, since it is smaller than the sum of its proper divisors (3198869010).

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

1668008430 is a wasteful number, since it uses less digits than its factorization.

1668008430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1668008430 is about 40841.2589179129. The cubic root of 1668008430 is about 1185.9491834216.

The spelling of 1668008430 in words is "one billion, six hundred sixty-eight million, eight thousand, four hundred thirty".