5117519394 has 144 divisors (see below), whose sum is σ = 13043230200. Its totient is φ = 1439617536.

The previous prime is 5117519383. The next prime is 5117519399. The reversal of 5117519394 is 4939157115.

It can be written as a sum of positive squares in 4 ways, for example, as 4485650625 + 631868769 = 66975^2 + 25137^2 .

It is a super-2 number, since 2×5117519394² = 52378009495932254472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5117519399) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2448702 + ... + 2450790.

Almost surely, 2^5117519394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5117519394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6521615100).

5117519394 is an abundant number, since it is smaller than the sum of its proper divisors (7925710806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5117519394 is a wasteful number, since it uses less digits than its factorization.

5117519394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2155 counting only the distinct ones).

The product of its digits is 170100, while the sum is 45.

The square root of 5117519394 is about 71536.8394185821. The cubic root of 5117519394 is about 1723.2693579138.

The spelling of 5117519394 in words is "five billion, one hundred seventeen million, five hundred nineteen thousand, three hundred ninety-four".