1664914641908 has 48 divisors (see below), whose sum is σ = 3336466936320. Its totient is φ = 712113583104.

The previous prime is 1664914641869. The next prime is 1664914641941. The reversal of 1664914641908 is 8091464194661.

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, 38966885 + ... + 39009587.

It is an arithmetic number, because the mean of its divisors is an integer number (69509727840).

Almost surely, 2^{1664914641908} is an apocalyptic number.

It is an amenable number.

1664914641908 is an abundant number, since it is smaller than the sum of its proper divisors (1671552294412).

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

1664914641908 is a wasteful number, since it uses less digits than its factorization.

1664914641908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45456 (or 45454 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 1664914641908 in words is "one trillion, six hundred sixty-four billion, nine hundred fourteen million, six hundred forty-one thousand, nine hundred eight".