5169491449 has 4 divisors (see below), whose sum is σ = 5186113920. Its totient is φ = 5152868980.

The previous prime is 5169491447. The next prime is 5169491471. The reversal of 5169491449 is 9441949615.

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 5169491449 - 2¹ = 5169491447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5169491396 and 5169491405.

It is not an unprimeable number, because it can be changed into a prime (5169491447) 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, 8310769 + ... + 8311390.

It is an arithmetic number, because the mean of its divisors is an integer number (1296528480).

Almost surely, 2^5169491449 is an apocalyptic number.

It is an amenable number.

5169491449 is a deficient number, since it is larger than the sum of its proper divisors (16622471).

5169491449 is a wasteful number, since it uses less digits than its factorization.

5169491449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16622470.

The product of its digits is 1399680, while the sum is 52.

The square root of 5169491449 is about 71899.1755794182. The cubic root of 5169491449 is about 1729.0833961850.

The spelling of 5169491449 in words is "five billion, one hundred sixty-nine million, four hundred ninety-one thousand, four hundred forty-nine".