1789145 has 4 divisors (see below), whose sum is σ = 2146980. Its totient is φ = 1431312.

The previous prime is 1789093. The next prime is 1789153. The reversal of 1789145 is 5419871.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1394761 + 394384 = 1181^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1789145 - 2¹⁶ = 1723609 is a prime.

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, 178910 + ... + 178919.

It is an arithmetic number, because the mean of its divisors is an integer number (536745).

2^1789145 is an apocalyptic number.

It is an amenable number.

1789145 is a deficient number, since it is larger than the sum of its proper divisors (357835).

1789145 is an equidigital number, since it uses as much as digits as its factorization.

1789145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357834.

The product of its digits is 10080, while the sum is 35.

The square root of 1789145 is about 1337.5892493587. The cubic root of 1789145 is about 121.3990196664.

The spelling of 1789145 in words is "one million, seven hundred eighty-nine thousand, one hundred forty-five".