5169281309 has 4 divisors (see below), whose sum is σ = 5242088160. Its totient is φ = 5096474460.

The previous prime is 5169281281. The next prime is 5169281317. The reversal of 5169281309 is 9031829615.

It is a happy number.

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 5169281309 - 2²⁸ = 4900845853 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 5169281309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5169281399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36403319 + ... + 36403460.

It is an arithmetic number, because the mean of its divisors is an integer number (1310522040).

Almost surely, 2^5169281309 is an apocalyptic number.

It is an amenable number.

5169281309 is a deficient number, since it is larger than the sum of its proper divisors (72806851).

5169281309 is an equidigital number, since it uses as much as digits as its factorization.

5169281309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72806850.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 5169281309 is about 71897.7142126229. The cubic root of 5169281309 is about 1729.0599667683.

The spelling of 5169281309 in words is "five billion, one hundred sixty-nine million, two hundred eighty-one thousand, three hundred nine".