8818181904 has 120 divisors (see below), whose sum is σ = 26734851360. Its totient is φ = 2497108992.

The previous prime is 8818181863. The next prime is 8818181959. The reversal of 8818181904 is 4091818188.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249187 + ... + 282365.

It is an arithmetic number, because the mean of its divisors is an integer number (222790428).

Almost surely, 2^8818181904 is an apocalyptic number.

8818181904 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8818181904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13367425680).

8818181904 is an abundant number, since it is smaller than the sum of its proper divisors (17916669456).

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

8818181904 is a wasteful number, since it uses less digits than its factorization.

8818181904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33317 (or 33304 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 48.

The square root of 8818181904 is about 93905.1750650623. The cubic root of 8818181904 is about 2065.9811329228.

The spelling of 8818181904 in words is "eight billion, eight hundred eighteen million, one hundred eighty-one thousand, nine hundred four".