1881318 has 8 divisors (see below), whose sum is σ = 3762648. Its totient is φ = 627104.

The previous prime is 1881311. The next prime is 1881329. The reversal of 1881318 is 8131881.

It is a sphenic number, since it is the product of 3 distinct primes.

1881318 is an admirable number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 156771 + ... + 156782.

It is an arithmetic number, because the mean of its divisors is an integer number (470331).

2^1881318 is an apocalyptic number.

1881318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1881318 is a wasteful number, since it uses less digits than its factorization.

1881318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313558.

The product of its digits is 1536, while the sum is 30.

The square root of 1881318 is about 1371.6114610195. The cubic root of 1881318 is about 123.4489509112.

The spelling of 1881318 in words is "one million, eight hundred eighty-one thousand, three hundred eighteen".