1816798884 has 24 divisors (see below), whose sum is σ = 4242023520. Its totient is φ = 605195904.

The previous prime is 1816798877. The next prime is 1816798987. The reversal of 1816798884 is 4888976181.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31429 + ... + 67980.

It is an arithmetic number, because the mean of its divisors is an integer number (176750980).

Almost surely, 2^1816798884 is an apocalyptic number.

It is an amenable number.

1816798884 is an abundant number, since it is smaller than the sum of its proper divisors (2425224636).

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

1816798884 is a wasteful number, since it uses less digits than its factorization.

1816798884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100939 (or 100937 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 60.

The square root of 1816798884 is about 42623.9238456527. The cubic root of 1816798884 is about 1220.2129172420.

The spelling of 1816798884 in words is "one billion, eight hundred sixteen million, seven hundred ninety-eight thousand, eight hundred eighty-four".