2198778912 has 384 divisors, whose sum is σ = 7664025600. Its totient is φ = 605491200.

The previous prime is 2198778893. The next prime is 2198778913.

2198778912 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2198778913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5008389 + ... + 5008827.

It is an arithmetic number, because the mean of its divisors is an integer number (19958400).

Almost surely, 2^2198778912 is an apocalyptic number.

2198778912 is a gapful number since it is divisible by the number (22) 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 2198778912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3832012800).

2198778912 is an abundant number, since it is smaller than the sum of its proper divisors (5465246688).

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

2198778912 is a wasteful number, since it uses less digits than its factorization.

2198778912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 503 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 2198778912 is about 46891.1389496992. The cubic root of 2198778912 is about 1300.3507755596.

The spelling of 2198778912 in words is "two billion, one hundred ninety-eight million, seven hundred seventy-eight thousand, nine hundred twelve".