1891412 has 24 divisors (see below), whose sum is σ = 3575040. Its totient is φ = 872640.

The previous prime is 1891391. The next prime is 1891429. The reversal of 1891412 is 2141981.

It is an Ulam number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2813 + ... + 3419.

It is an arithmetic number, because the mean of its divisors is an integer number (148960).

2^1891412 is an apocalyptic number.

It is an amenable number.

1891412 is a deficient number, since it is larger than the sum of its proper divisors (1683628).

1891412 is a wasteful number, since it uses less digits than its factorization.

1891412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 1891412 is about 1375.2861520425. The cubic root of 1891412 is about 123.6693410380.

The spelling of 1891412 in words is "one million, eight hundred ninety-one thousand, four hundred twelve".