1668441504 has 48 divisors (see below), whose sum is σ = 4445044128. Its totient is φ = 547844352.

The previous prime is 1668441491. The next prime is 1668441517. The reversal of 1668441504 is 4051448661.

It is an interprime number because it is at equal distance from previous prime (1668441491) and next prime (1668441517).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×1668441504³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123267 + ... + 136130.

It is an arithmetic number, because the mean of its divisors is an integer number (92605086).

Almost surely, 2^1668441504 is an apocalyptic number.

It is an amenable number.

1668441504 is an abundant number, since it is smaller than the sum of its proper divisors (2776602624).

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

1668441504 is a wasteful number, since it uses less digits than its factorization.

1668441504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259477 (or 259469 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1668441504 is about 40846.5604916742. The cubic root of 1668441504 is about 1186.0518126617.

The spelling of 1668441504 in words is "one billion, six hundred sixty-eight million, four hundred forty-one thousand, five hundred four".