1881361 has 8 divisors (see below), whose sum is σ = 2005920. Its totient is φ = 1759392.

The previous prime is 1881349. The next prime is 1881389. The reversal of 1881361 is 1631881.

It is a happy number.

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 1881361 - 2⁵ = 1881329 is a prime.

It is a Duffinian number.

1881361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1881311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (250740).

2^1881361 is an apocalyptic number.

It is an amenable number.

1881361 is a deficient number, since it is larger than the sum of its proper divisors (124559).

1881361 is a wasteful number, since it uses less digits than its factorization.

1881361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295.

The product of its digits is 1152, while the sum is 28.

The square root of 1881361 is about 1371.6271359229. The cubic root of 1881361 is about 123.4498914335.

The spelling of 1881361 in words is "one million, eight hundred eighty-one thousand, three hundred sixty-one".