1789045 has 4 divisors (see below), whose sum is σ = 2146860. Its totient is φ = 1431232.

The previous prime is 1789037. The next prime is 1789091. The reversal of 1789045 is 5409871.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5409871 = 1019 ⋅5309.

It can be written as a sum of positive squares in 2 ways, for example, as 938961 + 850084 = 969^2 + 922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1789045 - 2³ = 1789037 is a prime.

1789045 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1789045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178900 + ... + 178909.

It is an arithmetic number, because the mean of its divisors is an integer number (536715).

2^1789045 is an apocalyptic number.

It is an amenable number.

1789045 is a deficient number, since it is larger than the sum of its proper divisors (357815).

1789045 is an equidigital number, since it uses as much as digits as its factorization.

1789045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357814.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1789045 is about 1337.5518681532. The cubic root of 1789045 is about 121.3967578546.

The spelling of 1789045 in words is "one million, seven hundred eighty-nine thousand, forty-five".