2815188988 has 24 divisors (see below), whose sum is σ = 5088424320. Its totient is φ = 1361405760.

The previous prime is 2815188947. The next prime is 2815188989. The reversal of 2815188988 is 8898815182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815188989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251070 + ... + 262042.

It is an arithmetic number, because the mean of its divisors is an integer number (212017680).

Almost surely, 2^2815188988 is an apocalyptic number.

It is an amenable number.

2815188988 is a deficient number, since it is larger than the sum of its proper divisors (2273235332).

2815188988 is a wasteful number, since it uses less digits than its factorization.

2815188988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13077 (or 13075 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 58.

The square root of 2815188988 is about 53058.3545542076. The cubic root of 2815188988 is about 1412.0037550692.

The spelling of 2815188988 in words is "two billion, eight hundred fifteen million, one hundred eighty-eight thousand, nine hundred eighty-eight".