2081590040 has 16 divisors (see below), whose sum is σ = 4683577680. Its totient is φ = 832636000.

The previous prime is 2081590009. The next prime is 2081590073. The reversal of 2081590040 is 400951802.

It is a junction number, because it is equal to n+sod(n) for n = 2081589985 and 2081590012.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 26019836 + ... + 26019915.

It is an arithmetic number, because the mean of its divisors is an integer number (292723605).

Almost surely, 2^2081590040 is an apocalyptic number.

2081590040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081590040 is an abundant number, since it is smaller than the sum of its proper divisors (2601987640).

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

2081590040 is a wasteful number, since it uses less digits than its factorization.

2081590040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52039762 (or 52039758 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2081590040 is about 45624.4456404678. The cubic root of 2081590040 is about 1276.8260473447.

The spelling of 2081590040 in words is "two billion, eighty-one million, five hundred ninety thousand, forty".