1879891 has 8 divisors (see below), whose sum is σ = 2074464. Its totient is φ = 1692480.

The previous prime is 1879873. The next prime is 1879897. The reversal of 1879891 is 1989781.

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

It is not a de Polignac number, because 1879891 - 2⁹ = 1879379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1879897) 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, 1231 + ... + 2296.

It is an arithmetic number, because the mean of its divisors is an integer number (259308).

2^1879891 is an apocalyptic number.

1879891 is a deficient number, since it is larger than the sum of its proper divisors (194573).

1879891 is a wasteful number, since it uses less digits than its factorization.

1879891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581.

The product of its digits is 36288, while the sum is 43.

The square root of 1879891 is about 1371.0911712939. The cubic root of 1879891 is about 123.4177305625.

The spelling of 1879891 in words is "one million, eight hundred seventy-nine thousand, eight hundred ninety-one".