1881423 has 24 divisors (see below), whose sum is σ = 2901600. Its totient is φ = 1172160.

The previous prime is 1881419. The next prime is 1881431. The reversal of 1881423 is 3241881.

It is not a de Polignac number, because 1881423 - 2² = 1881419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12553 + ... + 12701.

It is an arithmetic number, because the mean of its divisors is an integer number (120900).

2^1881423 is an apocalyptic number.

1881423 is a deficient number, since it is larger than the sum of its proper divisors (1020177).

1881423 is a wasteful number, since it uses less digits than its factorization.

1881423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 236 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1881423 is about 1371.6497366310. The cubic root of 1881423 is about 123.4512475101.

It can be divided in two parts, 1881 and 423, that added together give a square (2304 = 48²).

The spelling of 1881423 in words is "one million, eight hundred eighty-one thousand, four hundred twenty-three".