1018873 has 2 divisors, whose sum is σ = 1018874. Its totient is φ = 1018872.

The previous prime is 1018859. The next prime is 1018879. The reversal of 1018873 is 3788101.

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., 1016064 + 2809 = 1008^2 + 53^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1018879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509436 + 509437.

It is an arithmetic number, because the mean of its divisors is an integer number (509437).

2^1018873 is an apocalyptic number.

It is an amenable number.

1018873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018873 is an equidigital number, since it uses as much as digits as its factorization.

1018873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1018873 is about 1009.3923914910. The cubic root of 1018873 is about 100.6251833131.

It can be divided in two parts, 1018 and 873, that added together give a triangular number (1891 = T₆₁).

The spelling of 1018873 in words is "one million, eighteen thousand, eight hundred seventy-three".