5189918345 has 8 divisors (see below), whose sum is σ = 6228969864. Its totient is φ = 4151222784.

The previous prime is 5189918333. The next prime is 5189918347. The reversal of 5189918345 is 5438199815.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7070281 + 5182848064 = 2659^2 + 71992^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5189918345 - 2⁶ = 5189918281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5189918347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55784 + ... + 116153.

It is an arithmetic number, because the mean of its divisors is an integer number (778621233).

Almost surely, 2^5189918345 is an apocalyptic number.

It is an amenable number.

5189918345 is a deficient number, since it is larger than the sum of its proper divisors (1039051519).

5189918345 is a wasteful number, since it uses less digits than its factorization.

5189918345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177979.

The product of its digits is 1555200, while the sum is 53.

The square root of 5189918345 is about 72041.0878943399. The cubic root of 5189918345 is about 1731.3578550712.

The spelling of 5189918345 in words is "five billion, one hundred eighty-nine million, nine hundred eighteen thousand, three hundred forty-five".