2018729 has 2 divisors, whose sum is σ = 2018730. Its totient is φ = 2018728.

The previous prime is 2018713. The next prime is 2018741. The reversal of 2018729 is 9278102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106704 + 912025 = 1052^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018729 - 2⁴ = 2018713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2018749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009364 + 1009365.

It is an arithmetic number, because the mean of its divisors is an integer number (1009365).

2^2018729 is an apocalyptic number.

It is an amenable number.

2018729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018729 is an equidigital number, since it uses as much as digits as its factorization.

2018729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2018729 is about 1420.8198337580. The cubic root of 2018729 is about 126.3841680553.

The spelling of 2018729 in words is "two million, eighteen thousand, seven hundred twenty-nine".