2081998888 has 16 divisors (see below), whose sum is σ = 3958731360. Its totient is φ = 1026337200.

The previous prime is 2081998883. The next prime is 2081998889. The reversal of 2081998888 is 8888991802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2081998883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832178 + ... + 1833313.

It is an arithmetic number, because the mean of its divisors is an integer number (247420710).

Almost surely, 2^2081998888 is an apocalyptic number.

It is an amenable number.

2081998888 is a deficient number, since it is larger than the sum of its proper divisors (1876732472).

2081998888 is a wasteful number, since it uses less digits than its factorization.

2081998888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665568 (or 3665564 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 61.

The square root of 2081998888 is about 45628.9260009481. The cubic root of 2081998888 is about 1276.9096362666.

The spelling of 2081998888 in words is "two billion, eighty-one million, nine hundred ninety-eight thousand, eight hundred eighty-eight".