5118973209 has 27 divisors (see below), whose sum is σ = 8603793237. Its totient is φ = 2924268984.

The previous prime is 5118973187. The next prime is 5118973259. The reversal of 5118973209 is 9023798115.

The square root of 5118973209 is 71547.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 5118973209 - 2²⁷ = 4984755481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5118973259) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1500784 + ... + 1504190.

Almost surely, 2^5118973209 is an apocalyptic number.

5118973209 is the 71547-th square number.

5118973209 is the 35774-th centered octagonal number.

It is an amenable number.

5118973209 is a deficient number, since it is larger than the sum of its proper divisors (3484820028).

5118973209 is an frugal number, since it uses more digits than its factorization.

5118973209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The cubic root of 5118973209 is about 1723.4325279607.

The spelling of 5118973209 in words is "five billion, one hundred eighteen million, nine hundred seventy-three thousand, two hundred nine".