1789001 has 2 divisors, whose sum is σ = 1789002. Its totient is φ = 1789000.

The previous prime is 1788991. The next prime is 1789003. The reversal of 1789001 is 1009871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1263376 + 525625 = 1124^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1789001 - 2⁶ = 1788937 is a prime.

Together with 1789003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1789003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894500 + 894501.

It is an arithmetic number, because the mean of its divisors is an integer number (894501).

2^1789001 is an apocalyptic number.

It is an amenable number.

1789001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1789001 is an equidigital number, since it uses as much as digits as its factorization.

1789001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1789001 is about 1337.5354200917. The cubic root of 1789001 is about 121.3957626307.

The spelling of 1789001 in words is "one million, seven hundred eighty-nine thousand, one".