8819821898 has 16 divisors (see below), whose sum is σ = 13348592640. Its totient is φ = 4370463600.

The previous prime is 8819821897. The next prime is 8819821919. The reversal of 8819821898 is 8981289188.

8819821898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8819821898.

It is not an unprimeable number, because it can be changed into a prime (8819821897) 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 7 ways as a sum of consecutive naturals, for example, 59843 + ... + 145673.

It is an arithmetic number, because the mean of its divisors is an integer number (834287040).

Almost surely, 2^8819821898 is an apocalyptic number.

8819821898 is a deficient number, since it is larger than the sum of its proper divisors (4528770742).

8819821898 is a wasteful number, since it uses less digits than its factorization.

8819821898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86293.

The product of its digits is 5308416, while the sum is 62.

The square root of 8819821898 is about 93913.9068402545. The cubic root of 8819821898 is about 2066.1092011451.

The spelling of 8819821898 in words is "eight billion, eight hundred nineteen million, eight hundred twenty-one thousand, eight hundred ninety-eight".