1891448 has 24 divisors (see below), whose sum is σ = 3843000. Its totient is φ = 872352.

The previous prime is 1891447. The next prime is 1891457. The reversal of 1891448 is 8441981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653 + ... + 2051.

It is an arithmetic number, because the mean of its divisors is an integer number (160125).

2^1891448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1891448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921500).

1891448 is an abundant number, since it is smaller than the sum of its proper divisors (1951552).

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

1891448 is a wasteful number, since it uses less digits than its factorization.

1891448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1414 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 1891448 is about 1375.2992401656. The cubic root of 1891448 is about 123.6701256491.

The spelling of 1891448 in words is "one million, eight hundred ninety-one thousand, four hundred forty-eight".