2045789 has 2 divisors, whose sum is σ = 2045790. Its totient is φ = 2045788.

The previous prime is 2045773. The next prime is 2045819. The reversal of 2045789 is 9875402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1836025 + 209764 = 1355^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045789 - 2⁴ = 2045773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022894 + 1022895.

It is an arithmetic number, because the mean of its divisors is an integer number (1022895).

2^2045789 is an apocalyptic number.

It is an amenable number.

2045789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045789 is an equidigital number, since it uses as much as digits as its factorization.

2045789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2045789 is about 1430.3108053846. The cubic root of 2045789 is about 126.9463679138.

The spelling of 2045789 in words is "two million, forty-five thousand, seven hundred eighty-nine".