1889243 has 4 divisors (see below), whose sum is σ = 1971408. Its totient is φ = 1807080.

The previous prime is 1889221. The next prime is 1889267. The reversal of 1889243 is 3429881.

It is a happy number.

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 1889243 - 2¹⁴ = 1872859 is a prime.

It is a super-2 number, since 2×1889243² = 7138478226098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889213) 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, 41048 + ... + 41093.

It is an arithmetic number, because the mean of its divisors is an integer number (492852).

2^1889243 is an apocalyptic number.

1889243 is a deficient number, since it is larger than the sum of its proper divisors (82165).

1889243 is an equidigital number, since it uses as much as digits as its factorization.

1889243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82164.

The product of its digits is 13824, while the sum is 35.

The square root of 1889243 is about 1374.4973626748. The cubic root of 1889243 is about 123.6220498430.

The spelling of 1889243 in words is "one million, eight hundred eighty-nine thousand, two hundred forty-three".