1881673 has 4 divisors (see below), whose sum is σ = 1884688. Its totient is φ = 1878660.

The previous prime is 1881641. The next prime is 1881697. The reversal of 1881673 is 3761881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3761881 = 31 ⋅121351.

It is a cyclic number.

It is not a de Polignac number, because 1881673 - 2⁵ = 1881641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1885673) 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, 183 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (471172).

2^1881673 is an apocalyptic number.

It is an amenable number.

1881673 is a deficient number, since it is larger than the sum of its proper divisors (3015).

1881673 is an equidigital number, since it uses as much as digits as its factorization.

1881673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014.

The product of its digits is 8064, while the sum is 34.

The square root of 1881673 is about 1371.7408647409. The cubic root of 1881673 is about 123.4567152589.

The spelling of 1881673 in words is "one million, eight hundred eighty-one thousand, six hundred seventy-three".