2081811792 has 40 divisors (see below), whose sum is σ = 5446099840. Its totient is φ = 685152000.

The previous prime is 2081811791. The next prime is 2081811793. The reversal of 2081811792 is 2971181802.

It is an interprime number because it is at equal distance from previous prime (2081811791) and next prime (2081811793).

It is a self number, because there is not a number n which added to its sum of digits gives 2081811792.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081811791) 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, 270709 + ... + 278292.

It is an arithmetic number, because the mean of its divisors is an integer number (136152496).

Almost surely, 2^2081811792 is an apocalyptic number.

It is an amenable number.

2081811792 is an abundant number, since it is smaller than the sum of its proper divisors (3364288048).

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

2081811792 is a wasteful number, since it uses less digits than its factorization.

2081811792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549091 (or 549085 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 2081811792 is about 45626.8757641809. The cubic root of 2081811792 is about 1276.8713858712.

The spelling of 2081811792 in words is "two billion, eighty-one million, eight hundred eleven thousand, seven hundred ninety-two".