18073073 has 2 divisors, whose sum is σ = 18073074. Its totient is φ = 18073072.

The previous prime is 18073043. The next prime is 18073103. The reversal of 18073073 is 37037081.

It is a balanced prime because it is at equal distance from previous prime (18073043) and next prime (18073103).

It can be written as a sum of positive squares in only one way, i.e., 17405584 + 667489 = 4172^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 18073073 - 2¹⁰ = 18072049 is a prime.

It is not a weakly prime, because it can be changed into another prime (18073043) 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, 9036536 + 9036537.

It is an arithmetic number, because the mean of its divisors is an integer number (9036537).

Almost surely, 2^18073073 is an apocalyptic number.

It is an amenable number.

18073073 is a deficient number, since it is larger than the sum of its proper divisors (1).

18073073 is an equidigital number, since it uses as much as digits as its factorization.

18073073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 18073073 is about 4251.2437003776. The cubic root of 18073073 is about 262.4283002967.

The spelling of 18073073 in words is "eighteen million, seventy-three thousand, seventy-three".