6516193549 has 8 divisors (see below), whose sum is σ = 6800546880. Its totient is φ = 6231926976.

The previous prime is 6516193531. The next prime is 6516193553. The reversal of 6516193549 is 9453916156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6516193549 - 2⁷ = 6516193421 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 (6516193529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166722 + ... + 202060.

It is an arithmetic number, because the mean of its divisors is an integer number (850068360).

Almost surely, 2^6516193549 is an apocalyptic number.

It is an amenable number.

6516193549 is a deficient number, since it is larger than the sum of its proper divisors (284353331).

6516193549 is a wasteful number, since it uses less digits than its factorization.

6516193549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43379.

The product of its digits is 874800, while the sum is 49.

The square root of 6516193549 is about 80722.9431388623. The cubic root of 6516193549 is about 1867.8041034806.

The spelling of 6516193549 in words is "six billion, five hundred sixteen million, one hundred ninety-three thousand, five hundred forty-nine".