1018729 has 2 divisors, whose sum is σ = 1018730. Its totient is φ = 1018728.

The previous prime is 1018711. The next prime is 1018733. The reversal of 1018729 is 9278101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 304704 = 845^2 + 552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1018729 - 2⁵ = 1018697 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1018697 and 1018706.

It is not a weakly prime, because it can be changed into another prime (1018709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509364 + 509365.

It is an arithmetic number, because the mean of its divisors is an integer number (509365).

2^1018729 is an apocalyptic number.

It is an amenable number.

1018729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018729 is an equidigital number, since it uses as much as digits as its factorization.

1018729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1018729 is about 1009.3210589302. The cubic root of 1018729 is about 100.6204425491.

The spelling of 1018729 in words is "one million, eighteen thousand, seven hundred twenty-nine".