8168528409 has 8 divisors (see below), whose sum is σ = 10993160160. Its totient is φ = 5394791136.

The previous prime is 8168528387. The next prime is 8168528413. The reversal of 8168528409 is 9048258618.

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

It is not a de Polignac number, because 8168528409 - 2¹⁹ = 8168004121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8168521409) 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, 12723244 + ... + 12723885.

It is an arithmetic number, because the mean of its divisors is an integer number (1374145020).

Almost surely, 2^8168528409 is an apocalyptic number.

It is an amenable number.

8168528409 is a deficient number, since it is larger than the sum of its proper divisors (2824631751).

8168528409 is a wasteful number, since it uses less digits than its factorization.

8168528409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25447239.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The square root of 8168528409 is about 90379.9115345883. The cubic root of 8168528409 is about 2013.9465548297.

The spelling of 8168528409 in words is "eight billion, one hundred sixty-eight million, five hundred twenty-eight thousand, four hundred nine".