6166728389 has 8 divisors (see below), whose sum is σ = 6323038848. Its totient is φ = 6011464000.

The previous prime is 6166728371. The next prime is 6166728391. The reversal of 6166728389 is 9838276616.

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 6166728389 - 2²⁰ = 6165679813 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 (6166728319) 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, 249572 + ... + 273165.

It is an arithmetic number, because the mean of its divisors is an integer number (790379856).

Almost surely, 2^6166728389 is an apocalyptic number.

It is an amenable number.

6166728389 is a deficient number, since it is larger than the sum of its proper divisors (156310459).

6166728389 is a wasteful number, since it uses less digits than its factorization.

6166728389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523035.

The product of its digits is 5225472, while the sum is 56.

The square root of 6166728389 is about 78528.5195900190. The cubic root of 6166728389 is about 1833.7984733573.

The spelling of 6166728389 in words is "six billion, one hundred sixty-six million, seven hundred twenty-eight thousand, three hundred eighty-nine".