10018609 has 2 divisors, whose sum is σ = 10018610. Its totient is φ = 10018608.

The previous prime is 10018573. The next prime is 10018621. The reversal of 10018609 is 90681001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9333025 + 685584 = 3055^2 + 828^2 .

It is a cyclic number.

It is not a de Polignac number, because 10018609 - 2¹¹ = 10016561 is a prime.

It is not a weakly prime, because it can be changed into another prime (10018669) 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, 5009304 + 5009305.

It is an arithmetic number, because the mean of its divisors is an integer number (5009305).

Almost surely, 2^10018609 is an apocalyptic number.

It is an amenable number.

10018609 is a deficient number, since it is larger than the sum of its proper divisors (1).

10018609 is an equidigital number, since it uses as much as digits as its factorization.

10018609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 10018609 is about 3165.2186338387. The cubic root of 10018609 is about 215.5770257760.

The spelling of 10018609 in words is "ten million, eighteen thousand, six hundred nine".