2164788109 has 8 divisors (see below), whose sum is σ = 2500504128. Its totient is φ = 1852224960.

The previous prime is 2164788107. The next prime is 2164788113. The reversal of 2164788109 is 9018874612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2164788109 - 2¹ = 2164788107 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 (2164788107) 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, 5788017 + ... + 5788390.

It is an arithmetic number, because the mean of its divisors is an integer number (312563016).

Almost surely, 2^2164788109 is an apocalyptic number.

It is an amenable number.

2164788109 is a deficient number, since it is larger than the sum of its proper divisors (335716019).

2164788109 is a wasteful number, since it uses less digits than its factorization.

2164788109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11576435.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 2164788109 is about 46527.2834904425. The cubic root of 2164788109 is about 1293.6152635743.

The spelling of 2164788109 in words is "two billion, one hundred sixty-four million, seven hundred eighty-eight thousand, one hundred nine".