1889109 has 32 divisors (see below), whose sum is σ = 3015680. Its totient is φ = 1166400.

The previous prime is 1889101. The next prime is 1889117. The reversal of 1889109 is 9019881.

It is an interprime number because it is at equal distance from previous prime (1889101) and next prime (1889117).

It is not a de Polignac number, because 1889109 - 2³ = 1889101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30939 + ... + 30999.

It is an arithmetic number, because the mean of its divisors is an integer number (94240).

2^1889109 is an apocalyptic number.

It is an amenable number.

1889109 is a deficient number, since it is larger than the sum of its proper divisors (1126571).

1889109 is a wasteful number, since it uses less digits than its factorization.

1889109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 1889109 is about 1374.4486167187. The cubic root of 1889109 is about 123.6191270239.

The spelling of 1889109 in words is "one million, eight hundred eighty-nine thousand, one hundred nine".