1889128 has 16 divisors (see below), whose sum is σ = 3696480. Its totient is φ = 903408.

The previous prime is 1889117. The next prime is 1889131. The reversal of 1889128 is 8219881.

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, 4950 + ... + 5317.

It is an arithmetic number, because the mean of its divisors is an integer number (231030).

2^1889128 is an apocalyptic number.

It is an amenable number.

1889128 is a deficient number, since it is larger than the sum of its proper divisors (1807352).

1889128 is a wasteful number, since it uses less digits than its factorization.

1889128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296 (or 10292 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 1889128 is about 1374.4555285639. The cubic root of 1889128 is about 123.6195414619.

It can be divided in two parts, 188 and 9128, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 1889128 in words is "one million, eight hundred eighty-nine thousand, one hundred twenty-eight".