2815198568 has 64 divisors (see below), whose sum is σ = 6629280000. Its totient is φ = 1113690816.

The previous prime is 2815198543. The next prime is 2815198601. The reversal of 2815198568 is 8658915182.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3788 + ... + 75131.

It is an arithmetic number, because the mean of its divisors is an integer number (103582500).

Almost surely, 2^2815198568 is an apocalyptic number.

2815198568 is a gapful number since it is divisible by the number (28) 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 2815198568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3314640000).

2815198568 is an abundant number, since it is smaller than the sum of its proper divisors (3814081432).

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

2815198568 is a wasteful number, since it uses less digits than its factorization.

2815198568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78959 (or 78941 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 53.

The square root of 2815198568 is about 53058.4448320906. Note that the first 3 decimals coincide. The cubic root of 2815198568 is about 1412.0053567356.

The spelling of 2815198568 in words is "two billion, eight hundred fifteen million, one hundred ninety-eight thousand, five hundred sixty-eight".