5191398709 has 16 divisors (see below), whose sum is σ = 6249047680. Its totient is φ = 4213036800.

The previous prime is 5191398691. The next prime is 5191398713. The reversal of 5191398709 is 9078931915.

It is a happy number.

It is not a de Polignac number, because 5191398709 - 2⁹ = 5191398197 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 (5191398799) 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 15 ways as a sum of consecutive naturals, for example, 228697 + ... + 250369.

It is an arithmetic number, because the mean of its divisors is an integer number (390565480).

Almost surely, 2^5191398709 is an apocalyptic number.

It is an amenable number.

5191398709 is a deficient number, since it is larger than the sum of its proper divisors (1057648971).

5191398709 is a wasteful number, since it uses less digits than its factorization.

5191398709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23500.

The product of its (nonzero) digits is 612360, while the sum is 52.

The square root of 5191398709 is about 72051.3616040669. The cubic root of 5191398709 is about 1731.5224560030.

The spelling of 5191398709 in words is "five billion, one hundred ninety-one million, three hundred ninety-eight thousand, seven hundred nine".