8180944417 has 4 divisors (see below), whose sum is σ = 8188403076. Its totient is φ = 8173485760.

The previous prime is 8180944379. The next prime is 8180944439. The reversal of 8180944417 is 7144490818.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4470794496 + 3710149921 = 66864^2 + 60911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8180944417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8180044417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3727684 + ... + 3729877.

It is an arithmetic number, because the mean of its divisors is an integer number (2047100769).

Almost surely, 2^8180944417 is an apocalyptic number.

It is an amenable number.

8180944417 is a deficient number, since it is larger than the sum of its proper divisors (7458659).

8180944417 is a wasteful number, since it uses less digits than its factorization.

8180944417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458658.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 8180944417 is about 90448.5733276098. The cubic root of 8180944417 is about 2014.9664251107.

The spelling of 8180944417 in words is "eight billion, one hundred eighty million, nine hundred forty-four thousand, four hundred seventeen".