1881873 has 20 divisors (see below), whose sum is σ = 3213760. Its totient is φ = 1075032.

The previous prime is 1881863. The next prime is 1881881. The reversal of 1881873 is 3781881.

It is not a de Polignac number, because 1881873 - 2⁸ = 1881617 is a prime.

It is a Duffinian number.

1881873 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1093 + ... + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (160688).

2^1881873 is an apocalyptic number.

It is an amenable number.

1881873 is a deficient number, since it is larger than the sum of its proper divisors (1331887).

1881873 is an equidigital number, since it uses as much as digits as its factorization.

1881873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338 (or 3329 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 1881873 is about 1371.8137628702. The cubic root of 1881873 is about 123.4610891093.

The spelling of 1881873 in words is "one million, eight hundred eighty-one thousand, eight hundred seventy-three".