1881118 has 16 divisors (see below), whose sum is σ = 3039984. Its totient is φ = 869760.

The previous prime is 1881109. The next prime is 1881119. The reversal of 1881118 is 8111881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881119) 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 7 ways as a sum of consecutive naturals, for example, 1621 + ... + 2527.

It is an arithmetic number, because the mean of its divisors is an integer number (189999).

2^1881118 is an apocalyptic number.

1881118 is a deficient number, since it is larger than the sum of its proper divisors (1158866).

1881118 is a wasteful number, since it uses less digits than its factorization.

1881118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987.

The product of its digits is 512, while the sum is 28.

The square root of 1881118 is about 1371.5385521377. The cubic root of 1881118 is about 123.4445762007. Note that the first 3 decimals are identical.

Adding to 1881118 its reverse (8111881), we get a palindrome (9992999).

The spelling of 1881118 in words is "one million, eight hundred eighty-one thousand, one hundred eighteen".