1889135 has 4 divisors (see below), whose sum is σ = 2266968. Its totient is φ = 1511304.

The previous prime is 1889131. The next prime is 1889143. The reversal of 1889135 is 5319881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1889135 - 2² = 1889131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1889095 and 1889104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188909 + ... + 188918.

It is an arithmetic number, because the mean of its divisors is an integer number (566742).

2^1889135 is an apocalyptic number.

1889135 is a deficient number, since it is larger than the sum of its proper divisors (377833).

1889135 is an equidigital number, since it uses as much as digits as its factorization.

1889135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377832.

The product of its digits is 8640, while the sum is 35.

The square root of 1889135 is about 1374.4580750245. The cubic root of 1889135 is about 123.6196941489.

The spelling of 1889135 in words is "one million, eight hundred eighty-nine thousand, one hundred thirty-five".