2209749189 has 8 divisors (see below), whose sum is σ = 2957286240. Its totient is φ = 1467689136.

The previous prime is 2209749167. The next prime is 2209749209. The reversal of 2209749189 is 9819479022.

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

It is not a de Polignac number, because 2209749189 - 2¹⁶ = 2209683653 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2209749149) 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, 1368307 + ... + 1369920.

It is an arithmetic number, because the mean of its divisors is an integer number (369660780).

Almost surely, 2^2209749189 is an apocalyptic number.

It is an amenable number.

2209749189 is a deficient number, since it is larger than the sum of its proper divisors (747537051).

2209749189 is a wasteful number, since it uses less digits than its factorization.

2209749189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738499.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 2209749189 is about 47007.9694200888. The cubic root of 2209749189 is about 1302.5097844223.

The spelling of 2209749189 in words is "two billion, two hundred nine million, seven hundred forty-nine thousand, one hundred eighty-nine".