1668001445 has 16 divisors (see below), whose sum is σ = 2186775360. Its totient is φ = 1211308800.

The previous prime is 1668001429. The next prime is 1668001451. The reversal of 1668001445 is 5441008661.

It is not a de Polignac number, because 1668001445 - 2⁴ = 1668001429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16061 + ... + 59949.

It is an arithmetic number, because the mean of its divisors is an integer number (136673460).

Almost surely, 2^1668001445 is an apocalyptic number.

It is an amenable number.

1668001445 is a deficient number, since it is larger than the sum of its proper divisors (518773915).

1668001445 is a wasteful number, since it uses less digits than its factorization.

1668001445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44596.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1668001445 is about 40841.1734038091. The cubic root of 1668001445 is about 1185.9475279810.

The spelling of 1668001445 in words is "one billion, six hundred sixty-eight million, one thousand, four hundred forty-five".