18264073 has 6 divisors (see below), whose sum is σ = 19276314. Its totient is φ = 17302464.

The previous prime is 18264041. The next prime is 18264101. The reversal of 18264073 is 37046281.

It can be written as a sum of positive squares in only one way, i.e., 15468489 + 2795584 = 3933^2 + 1672^2 .

It is not a de Polignac number, because 18264073 - 2⁵ = 18264041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18264773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24936 + ... + 25657.

It is an arithmetic number, because the mean of its divisors is an integer number (3212719).

Almost surely, 2^18264073 is an apocalyptic number.

It is an amenable number.

18264073 is a deficient number, since it is larger than the sum of its proper divisors (1012241).

18264073 is an equidigital number, since it uses as much as digits as its factorization.

18264073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50631 (or 50612 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 18264073 is about 4273.6486753125. The cubic root of 18264073 is about 263.3495282817.

The spelling of 18264073 in words is "eighteen million, two hundred sixty-four thousand, seventy-three".