5157647909 has 4 divisors (see below), whose sum is σ = 5324023680. Its totient is φ = 4991272140.

The previous prime is 5157647851. The next prime is 5157647917. The reversal of 5157647909 is 9097467515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5157647909 - 2¹⁶ = 5157582373 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 (5157647609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83187839 + ... + 83187900.

It is an arithmetic number, because the mean of its divisors is an integer number (1331005920).

Almost surely, 2^5157647909 is an apocalyptic number.

It is an amenable number.

5157647909 is a deficient number, since it is larger than the sum of its proper divisors (166375771).

5157647909 is a wasteful number, since it uses less digits than its factorization.

5157647909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166375770.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The square root of 5157647909 is about 71816.7662109622. The cubic root of 5157647909 is about 1727.7619169165.

The spelling of 5157647909 in words is "five billion, one hundred fifty-seven million, six hundred forty-seven thousand, nine hundred nine".