1668440048 has 40 divisors (see below), whose sum is σ = 3529677360. Its totient is φ = 757693440.

The previous prime is 1668440047. The next prime is 1668440051. The reversal of 1668440048 is 8400448661.

It is a junction number, because it is equal to n+sod(n) for n = 1668439987 and 1668440014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668440047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224618 + ... + 231926.

It is an arithmetic number, because the mean of its divisors is an integer number (88241934).

Almost surely, 2^1668440048 is an apocalyptic number.

It is an amenable number.

1668440048 is an abundant number, since it is smaller than the sum of its proper divisors (1861237312).

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

1668440048 is a wasteful number, since it uses less digits than its factorization.

1668440048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8625 (or 8619 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 1668440048 is about 40846.5426688722. The cubic root of 1668440048 is about 1186.0514676507.

The spelling of 1668440048 in words is "one billion, six hundred sixty-eight million, four hundred forty thousand, forty-eight".