1668234744 has 384 divisors, whose sum is σ = 5515776000. Its totient is φ = 465696000.

The previous prime is 1668234739. The next prime is 1668234761. The reversal of 1668234744 is 4474328661.

It is a super-2 number, since 2×1668234744² = 5566014322177491072, which contains 22 as substring.

Its product of digits (774144) is a multiple of the sum of its prime factors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 1668234744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23496229 + ... + 23496299.

It is an arithmetic number, because the mean of its divisors is an integer number (14364000).

Almost surely, 2^1668234744 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 1668234744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2757888000).

1668234744 is an abundant number, since it is smaller than the sum of its proper divisors (3847541256).

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

1668234744 is a wasteful number, since it uses less digits than its factorization.

1668234744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 147 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 1668234744 is about 40844.0294780033. The cubic root of 1668234744 is about 1186.0028171964.

The spelling of 1668234744 in words is "one billion, six hundred sixty-eight million, two hundred thirty-four thousand, seven hundred forty-four".