2169788809 has 8 divisors (see below), whose sum is σ = 2299320000. Its totient is φ = 2041790832.

The previous prime is 2169788801. The next prime is 2169788821. The reversal of 2169788809 is 9088879612.

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 2169788809 - 2³ = 2169788801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2169788801) 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, 380389 + ... + 386050.

It is an arithmetic number, because the mean of its divisors is an integer number (287415000).

Almost surely, 2^2169788809 is an apocalyptic number.

It is an amenable number.

2169788809 is a deficient number, since it is larger than the sum of its proper divisors (129531191).

2169788809 is a wasteful number, since it uses less digits than its factorization.

2169788809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766607.

The product of its (nonzero) digits is 3483648, while the sum is 58.

The square root of 2169788809 is about 46580.9919280386. The cubic root of 2169788809 is about 1294.6105891752.

The spelling of 2169788809 in words is "two billion, one hundred sixty-nine million, seven hundred eighty-eight thousand, eight hundred nine".