1889434 has 4 divisors (see below), whose sum is σ = 2834154. Its totient is φ = 944716.

The previous prime is 1889429. The next prime is 1889441. The reversal of 1889434 is 4349881.

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

It can be written as a sum of positive squares in only one way, i.e., 1447209 + 442225 = 1203^2 + 665^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1889393 and 1889402.

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 as a sum of consecutive naturals, namely, 472357 + ... + 472360.

2^1889434 is an apocalyptic number.

1889434 is a deficient number, since it is larger than the sum of its proper divisors (944720).

1889434 is an equidigital number, since it uses as much as digits as its factorization.

1889434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944719.

The product of its digits is 27648, while the sum is 37.

The square root of 1889434 is about 1374.5668408630. The cubic root of 1889434 is about 123.6262157119.

The spelling of 1889434 in words is "one million, eight hundred eighty-nine thousand, four hundred thirty-four".