5641909209 has 12 divisors (see below), whose sum is σ = 8165441700. Its totient is φ = 3753880224.

The previous prime is 5641909183. The next prime is 5641909241. The reversal of 5641909209 is 9029091465.

It can be written as a sum of positive squares in 2 ways, for example, as 4199428809 + 1442480400 = 64803^2 + 37980^2 .

It is not a de Polignac number, because 5641909209 - 2¹⁷ = 5641778137 is a prime.

It is a super-2 number, since 2×5641909209² = 63662279045198011362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5641909249) 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, 611214 + ... + 620375.

It is an arithmetic number, because the mean of its divisors is an integer number (680453475).

Almost surely, 2^5641909209 is an apocalyptic number.

It is an amenable number.

5641909209 is a deficient number, since it is larger than the sum of its proper divisors (2523532491).

5641909209 is a wasteful number, since it uses less digits than its factorization.

5641909209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232104 (or 1232101 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 5641909209 is about 75112.6434696583. The cubic root of 5641909209 is about 1780.2269214760.

The spelling of 5641909209 in words is "five billion, six hundred forty-one million, nine hundred nine thousand, two hundred nine".