2081091873 has 32 divisors (see below), whose sum is σ = 3360890880. Its totient is φ = 1118188800.

The previous prime is 2081091853. The next prime is 2081091893. The reversal of 2081091873 is 3781901802.

It is an interprime number because it is at equal distance from previous prime (2081091853) and next prime (2081091893).

It is not a de Polignac number, because 2081091873 - 2⁶ = 2081091809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2081091833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511698 + ... + 515748.

It is an arithmetic number, because the mean of its divisors is an integer number (105027840).

Almost surely, 2^2081091873 is an apocalyptic number.

It is an amenable number.

2081091873 is a deficient number, since it is larger than the sum of its proper divisors (1279799007).

2081091873 is a wasteful number, since it uses less digits than its factorization.

2081091873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 2081091873 is about 45618.9858830729. The cubic root of 2081091873 is about 1276.7241823700.

The spelling of 2081091873 in words is "two billion, eighty-one million, ninety-one thousand, eight hundred seventy-three".