1881094 has 4 divisors (see below), whose sum is σ = 2821644. Its totient is φ = 940546.

The previous prime is 1881083. The next prime is 1881109. The reversal of 1881094 is 4901881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4901881 = 419 ⋅11699.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470272 + ... + 470275.

It is an arithmetic number, because the mean of its divisors is an integer number (705411).

2^1881094 is an apocalyptic number.

1881094 is a deficient number, since it is larger than the sum of its proper divisors (940550).

1881094 is an equidigital number, since it uses as much as digits as its factorization.

1881094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940549.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1881094 is about 1371.5298028114. The cubic root of 1881094 is about 123.4440512146. Note that the first 3 decimals are identical.

It can be divided in two parts, 18810 and 94, that multiplied together give a triangular number (1768140 = T₁₈₈₀).

The spelling of 1881094 in words is "one million, eight hundred eighty-one thousand, ninety-four".