5165218357 has 18 divisors (see below), whose sum is σ = 5756720886. Its totient is φ = 4606914960.

The previous prime is 5165218349. The next prime is 5165218379. The reversal of 5165218357 is 7538125615.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3575920401 + 1589297956 = 59799^2 + 39866^2 .

It is not a de Polignac number, because 5165218357 - 2³ = 5165218349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165218757) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8032678 + ... + 8033320.

It is an arithmetic number, because the mean of its divisors is an integer number (319817827).

Almost surely, 2^5165218357 is an apocalyptic number.

It is an amenable number.

5165218357 is a deficient number, since it is larger than the sum of its proper divisors (591502529).

5165218357 is an frugal number, since it uses more digits than its factorization.

5165218357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 687 counting only the distinct ones).

The product of its digits is 252000, while the sum is 43.

The square root of 5165218357 is about 71869.4535738237. The cubic root of 5165218357 is about 1728.6068458178.

The spelling of 5165218357 in words is "five billion, one hundred sixty-five million, two hundred eighteen thousand, three hundred fifty-seven".