18541073 has 2 divisors, whose sum is σ = 18541074. Its totient is φ = 18541072.

The previous prime is 18541057. The next prime is 18541099. The reversal of 18541073 is 37014581.

18541073 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12306064 + 6235009 = 3508^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 18541073 - 2⁴ = 18541057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18541673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9270536 + 9270537.

It is an arithmetic number, because the mean of its divisors is an integer number (9270537).

Almost surely, 2^18541073 is an apocalyptic number.

It is an amenable number.

18541073 is a deficient number, since it is larger than the sum of its proper divisors (1).

18541073 is an equidigital number, since it uses as much as digits as its factorization.

18541073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 18541073 is about 4305.9346256068. The cubic root of 18541073 is about 264.6742074411.

The spelling of 18541073 in words is "eighteen million, five hundred forty-one thousand, seventy-three".