2171384289 has 12 divisors (see below), whose sum is σ = 3139007872. Its totient is φ = 1446406200.

The previous prime is 2171384263. The next prime is 2171384297. The reversal of 2171384289 is 9824831712.

It is a happy number.

2171384289 is a `hidden beast` number, since 217 + 1 + 3 + 8 + 428 + 9 = 666.

It is not a de Polignac number, because 2171384289 - 2¹⁹ = 2170860001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171384389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86917 + ... + 109074.

Almost surely, 2^2171384289 is an apocalyptic number.

It is an amenable number.

2171384289 is a deficient number, since it is larger than the sum of its proper divisors (967623583).

2171384289 is a wasteful number, since it uses less digits than its factorization.

2171384289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197228 (or 197225 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2171384289 is about 46598.1146507023. The cubic root of 2171384289 is about 1294.9278273061.

The spelling of 2171384289 in words is "two billion, one hundred seventy-one million, three hundred eighty-four thousand, two hundred eighty-nine".