1881271 has 8 divisors (see below), whose sum is σ = 2276640. Its totient is φ = 1517568.

The previous prime is 1881263. The next prime is 1881277. The reversal of 1881271 is 1721881.

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 1881271 - 2³ = 1881263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881277) 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 7 ways as a sum of consecutive naturals, for example, 7786 + ... + 8023.

It is an arithmetic number, because the mean of its divisors is an integer number (284580).

2^1881271 is an apocalyptic number.

1881271 is a deficient number, since it is larger than the sum of its proper divisors (395369).

1881271 is a wasteful number, since it uses less digits than its factorization.

1881271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15833.

The product of its digits is 896, while the sum is 28.

The square root of 1881271 is about 1371.5943277806. The cubic root of 1881271 is about 123.4479228821.

The spelling of 1881271 in words is "one million, eight hundred eighty-one thousand, two hundred seventy-one".