1889245 has 8 divisors (see below), whose sum is σ = 2275416. Its totient is φ = 1505856.

The previous prime is 1889221. The next prime is 1889267. The reversal of 1889245 is 5429881.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 1887876 = 37^2 + 1374^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1889245 - 2⁵ = 1889213 is a prime.

It is a Duffinian number.

1889245 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (284427).

2^1889245 is an apocalyptic number.

It is an amenable number.

1889245 is a deficient number, since it is larger than the sum of its proper divisors (386171).

1889245 is a wasteful number, since it uses less digits than its factorization.

1889245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its digits is 23040, while the sum is 37.

The square root of 1889245 is about 1374.4980902133. The cubic root of 1889245 is about 123.6220934661.

The spelling of 1889245 in words is "one million, eight hundred eighty-nine thousand, two hundred forty-five".