8851819220 has 12 divisors (see below), whose sum is σ = 18588820404. Its totient is φ = 3540727680.

The previous prime is 8851819219. The next prime is 8851819241. The reversal of 8851819220 is 229181588.

It can be written as a sum of positive squares in 2 ways, for example, as 3199486096 + 5652333124 = 56564^2 + 75182^2 .

It is a super-2 number, since 2×8851819220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221295461 + ... + 221295500.

It is an arithmetic number, because the mean of its divisors is an integer number (1549068367).

Almost surely, 2^8851819220 is an apocalyptic number.

It is an amenable number.

8851819220 is an abundant number, since it is smaller than the sum of its proper divisors (9737001184).

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

8851819220 is a wasteful number, since it uses less digits than its factorization.

8851819220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442590970 (or 442590968 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 8851819220 is about 94084.1071594985. The cubic root of 8851819220 is about 2068.6047230275.

The spelling of 8851819220 in words is "eight billion, eight hundred fifty-one million, eight hundred nineteen thousand, two hundred twenty".