1881133 has 8 divisors (see below), whose sum is σ = 1994720. Its totient is φ = 1769040.

The previous prime is 1881127. The next prime is 1881151. The reversal of 1881133 is 3311881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1881133 - 2¹⁷ = 1750061 is a prime.

It is a super-2 number, since 2×1881133² = 7077322727378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1881098 and 1881107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881163) 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, 3166 + ... + 3712.

It is an arithmetic number, because the mean of its divisors is an integer number (249340).

2^1881133 is an apocalyptic number.

It is an amenable number.

1881133 is a deficient number, since it is larger than the sum of its proper divisors (113587).

1881133 is a wasteful number, since it uses less digits than its factorization.

1881133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its digits is 576, while the sum is 25.

The square root of 1881133 is about 1371.5440204383. The cubic root of 1881133 is about 123.4449043147. Note that the first 3 decimals are identical.

The spelling of 1881133 in words is "one million, eight hundred eighty-one thousand, one hundred thirty-three".