1881103 has 4 divisors (see below), whose sum is σ = 2149840. Its totient is φ = 1612368.

The previous prime is 1881083. The next prime is 1881109. The reversal of 1881103 is 3011881.

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

It is a cyclic number.

It is not a de Polignac number, because 1881103 - 2⁵ = 1881071 is a prime.

1881103 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881109) 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 3 ways as a sum of consecutive naturals, for example, 134358 + ... + 134371.

It is an arithmetic number, because the mean of its divisors is an integer number (537460).

2^1881103 is an apocalyptic number.

1881103 is a deficient number, since it is larger than the sum of its proper divisors (268737).

1881103 is an equidigital number, since it uses as much as digits as its factorization.

1881103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268736.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1881103 is about 1371.5330838153. The cubic root of 1881103 is about 123.4442480849. Note that the first 3 decimals are identical.

Adding to 1881103 its reverse (3011881), we get a palindrome (4892984).

The spelling of 1881103 in words is "one million, eight hundred eighty-one thousand, one hundred three".