1881043 has 4 divisors (see below), whose sum is σ = 1931920. Its totient is φ = 1830168.

The previous prime is 1881041. The next prime is 1881071. The reversal of 1881043 is 3401881.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1881043 - 2¹ = 1881041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1880999 and 1881017.

It is not an unprimeable number, because it can be changed into a prime (1881041) by changing a digit.

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, 25383 + ... + 25456.

It is an arithmetic number, because the mean of its divisors is an integer number (482980).

2^1881043 is an apocalyptic number.

1881043 is a deficient number, since it is larger than the sum of its proper divisors (50877).

1881043 is an equidigital number, since it uses as much as digits as its factorization.

1881043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50876.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1881043 is about 1371.5112103078. The cubic root of 1881043 is about 123.4429356043.

The spelling of 1881043 in words is "one million, eight hundred eighty-one thousand, forty-three".