8549437873 has 4 divisors (see below), whose sum is σ = 8549622900. Its totient is φ = 8549252848.

The previous prime is 8549437867. The next prime is 8549437901. The reversal of 8549437873 is 3787349458.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1575851809 + 6973586064 = 39697^2 + 83508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8549437873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8549437823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41703 + ... + 137251.

It is an arithmetic number, because the mean of its divisors is an integer number (2137405725).

Almost surely, 2^8549437873 is an apocalyptic number.

It is an amenable number.

8549437873 is a deficient number, since it is larger than the sum of its proper divisors (185027).

8549437873 is an equidigital number, since it uses as much as digits as its factorization.

8549437873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185026.

The product of its digits is 20321280, while the sum is 58.

The square root of 8549437873 is about 92463.1703598790. The cubic root of 8549437873 is about 2044.7765390101.

The spelling of 8549437873 in words is "eight billion, five hundred forty-nine million, four hundred thirty-seven thousand, eight hundred seventy-three".