8180218837 has 16 divisors (see below), whose sum is σ = 9653862400. Its totient is φ = 6782998320.

The previous prime is 8180218829. The next prime is 8180218859. The reversal of 8180218837 is 7388120818.

It is a happy number.

It is not a de Polignac number, because 8180218837 - 2³ = 8180218829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8180218807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845614 + ... + 855232.

It is an arithmetic number, because the mean of its divisors is an integer number (603366400).

Almost surely, 2^8180218837 is an apocalyptic number.

It is an amenable number.

8180218837 is a deficient number, since it is larger than the sum of its proper divisors (1473643563).

8180218837 is a wasteful number, since it uses less digits than its factorization.

8180218837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576.

The product of its (nonzero) digits is 172032, while the sum is 46.

The square root of 8180218837 is about 90444.5622301308. The cubic root of 8180218837 is about 2014.9068532370.

The spelling of 8180218837 in words is "eight billion, one hundred eighty million, two hundred eighteen thousand, eight hundred thirty-seven".