1889144 has 8 divisors (see below), whose sum is σ = 3542160. Its totient is φ = 944568.

The previous prime is 1889143. The next prime is 1889177. The reversal of 1889144 is 4419881.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118064 + ... + 118079.

It is an arithmetic number, because the mean of its divisors is an integer number (442770).

2^1889144 is an apocalyptic number.

It is an amenable number.

1889144 is a deficient number, since it is larger than the sum of its proper divisors (1653016).

1889144 is a wasteful number, since it uses less digits than its factorization.

1889144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236149 (or 236145 counting only the distinct ones).

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

The square root of 1889144 is about 1374.4613490382. The cubic root of 1889144 is about 123.6198904602.

The spelling of 1889144 in words is "one million, eight hundred eighty-nine thousand, one hundred forty-four".