1818486846 has 144 divisors (see below), whose sum is σ = 4684417920. Its totient is φ = 504208800.

The previous prime is 1818486833. The next prime is 1818486851. The reversal of 1818486846 is 6486848181.

It is a happy number.

1818486846 is a `hidden beast` number, since 1 + 81 + 8 + 486 + 84 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1818486792 and 1818486801.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 3615031 + ... + 3615533.

It is an arithmetic number, because the mean of its divisors is an integer number (32530680).

Almost surely, 2^1818486846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818486846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2342208960).

1818486846 is an abundant number, since it is smaller than the sum of its proper divisors (2865931074).

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

1818486846 is a wasteful number, since it uses less digits than its factorization.

1818486846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 569 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The square root of 1818486846 is about 42643.7198893342. The cubic root of 1818486846 is about 1220.5906944251.

The spelling of 1818486846 in words is "one billion, eight hundred eighteen million, four hundred eighty-six thousand, eight hundred forty-six".