1664183109 has 16 divisors (see below), whose sum is σ = 2230455680. Its totient is φ = 1103699520.

The previous prime is 1664183099. The next prime is 1664183123. The reversal of 1664183109 is 9013814661.

It is not a de Polignac number, because 1664183109 - 2¹¹ = 1664181061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664183189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499752 + ... + 503070.

It is an arithmetic number, because the mean of its divisors is an integer number (139403480).

Almost surely, 2^1664183109 is an apocalyptic number.

It is an amenable number.

1664183109 is a deficient number, since it is larger than the sum of its proper divisors (566272571).

1664183109 is a wasteful number, since it uses less digits than its factorization.

1664183109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1664183109 is about 40794.4004613378. The cubic root of 1664183109 is about 1185.0418920902.

The spelling of 1664183109 in words is "one billion, six hundred sixty-four million, one hundred eighty-three thousand, one hundred nine".