818222371848 has 324 divisors, whose sum is σ = 2621363256135. Its totient is φ = 229894060032.

The previous prime is 818222371847. The next prime is 818222371849. The reversal of 818222371848 is 848173222818.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

818222371848 is a `hidden beast` number, since 8 + 1 + 8 + 222 + 371 + 8 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (818222371847) and next prime (818222371849).

It can be written as a sum of positive squares in 5 ways, for example, as 202753879524 + 615468492324 = 450282^2 + 784518^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=639618.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 818222371794 and 818222371803.

It is not an unprimeable number, because it can be changed into a prime (818222371847) by changing a digit.

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 80 ways as a sum of consecutive naturals, for example, 5211607386 + ... + 5211607542.

Almost surely, 2^818222371848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818222371848

818222371848 is an abundant number, since it is smaller than the sum of its proper divisors (1803140884287).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818222371848 is a wasteful number, since it uses less digits than its factorization.

818222371848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 266 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The spelling of 818222371848 in words is "eight hundred eighteen billion, two hundred twenty-two million, three hundred seventy-one thousand, eight hundred forty-eight".