2018531 has 2 divisors, whose sum is σ = 2018532. Its totient is φ = 2018530.

The previous prime is 2018507. The next prime is 2018543. The reversal of 2018531 is 1358102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2018531 is a prime.

It is a super-2 number, since 2×2018531² = 8148934795922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2018561) 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, 1009265 + 1009266.

It is an arithmetic number, because the mean of its divisors is an integer number (1009266).

2^2018531 is an apocalyptic number.

2018531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018531 is an equidigital number, since it uses as much as digits as its factorization.

2018531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2018531 is about 1420.7501539680. The cubic root of 2018531 is about 126.3800359366.

The spelling of 2018531 in words is "two million, eighteen thousand, five hundred thirty-one".