18334445 has 8 divisors (see below), whose sum is σ = 22249080. Its totient is φ = 14502400.

The previous prime is 18334417. The next prime is 18334447. The reversal of 18334445 is 54443381.

It can be written as a sum of positive squares in 4 ways, for example, as 2157961 + 16176484 = 1469^2 + 4022^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18334445 - 2²⁰ = 17285869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18334447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20156 + ... + 21045.

It is an arithmetic number, because the mean of its divisors is an integer number (2781135).

Almost surely, 2^18334445 is an apocalyptic number.

It is an amenable number.

18334445 is a deficient number, since it is larger than the sum of its proper divisors (3914635).

18334445 is an equidigital number, since it uses as much as digits as its factorization.

18334445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41295.

The product of its digits is 23040, while the sum is 32.

The square root of 18334445 is about 4281.8740056195. The cubic root of 18334445 is about 263.6873259136.

The spelling of 18334445 in words is "eighteen million, three hundred thirty-four thousand, four hundred forty-five".