4166494985 has 8 divisors (see below), whose sum is σ = 5000563080. Its totient is φ = 3332683264.

The previous prime is 4166494961. The next prime is 4166495023. The reversal of 4166494985 is 5894946614.

It can be written as a sum of positive squares in 4 ways, for example, as 65885689 + 4100609296 = 8117^2 + 64036^2 .

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 4166494985 - 2²⁶ = 4099386121 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4166494985.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26312 + ... + 95001.

It is an arithmetic number, because the mean of its divisors is an integer number (625070385).

Almost surely, 2^4166494985 is an apocalyptic number.

It is an amenable number.

4166494985 is a deficient number, since it is larger than the sum of its proper divisors (834068095).

4166494985 is a wasteful number, since it uses less digits than its factorization.

4166494985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128187.

The product of its digits is 7464960, while the sum is 56.

The square root of 4166494985 is about 64548.3925826197. The cubic root of 4166494985 is about 1609.1268731289.

The spelling of 4166494985 in words is "four billion, one hundred sixty-six million, four hundred ninety-four thousand, nine hundred eighty-five".