2163809329 has 4 divisors (see below), whose sum is σ = 2360519280. Its totient is φ = 1967099380.

The previous prime is 2163809327. The next prime is 2163809353. The reversal of 2163809329 is 9239083612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2163809329 - 2¹ = 2163809327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163809327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98354959 + ... + 98354980.

It is an arithmetic number, because the mean of its divisors is an integer number (590129820).

Almost surely, 2^2163809329 is an apocalyptic number.

It is an amenable number.

2163809329 is a deficient number, since it is larger than the sum of its proper divisors (196709951).

2163809329 is a wasteful number, since it uses less digits than its factorization.

2163809329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196709950.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 2163809329 is about 46516.7639566641. The cubic root of 2163809329 is about 1293.4202705683.

The spelling of 2163809329 in words is "two billion, one hundred sixty-three million, eight hundred nine thousand, three hundred twenty-nine".