5169540509 has 4 divisors (see below), whose sum is σ = 5908046304. Its totient is φ = 4431034716.

The previous prime is 5169540499. The next prime is 5169540511. The reversal of 5169540509 is 9050459615.

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 a de Polignac number, because none of the positive numbers 2^k-5169540509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5169540509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5169540589) 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, 369252887 + ... + 369252900.

It is an arithmetic number, because the mean of its divisors is an integer number (1477011576).

Almost surely, 2^5169540509 is an apocalyptic number.

It is an amenable number.

5169540509 is a deficient number, since it is larger than the sum of its proper divisors (738505795).

5169540509 is an equidigital number, since it uses as much as digits as its factorization.

5169540509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738505794.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 5169540509 is about 71899.5167508099. The cubic root of 5169540509 is about 1729.0888660050.

The spelling of 5169540509 in words is "five billion, one hundred sixty-nine million, five hundred forty thousand, five hundred nine".