1881258 has 8 divisors (see below), whose sum is σ = 3762528. Its totient is φ = 627084.

The previous prime is 1881241. The next prime is 1881263. The reversal of 1881258 is 8521881.

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

1881258 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156766 + ... + 156777.

It is an arithmetic number, because the mean of its divisors is an integer number (470316).

2^1881258 is an apocalyptic number.

1881258 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.

1881258 is a wasteful number, since it uses less digits than its factorization.

1881258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313548.

The product of its digits is 5120, while the sum is 33.

The square root of 1881258 is about 1371.5895887619. The cubic root of 1881258 is about 123.4476385306.

The spelling of 1881258 in words is "one million, eight hundred eighty-one thousand, two hundred fifty-eight".