18530673 has 24 divisors (see below), whose sum is σ = 29526912. Its totient is φ = 10299744.

The previous prime is 18530671. The next prime is 18530693. The reversal of 18530673 is 37603581.

It is a happy number.

It is not a de Polignac number, because 18530673 - 2¹ = 18530671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18530671) 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 in 23 ways as a sum of consecutive naturals, for example, 3736 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (1230288).

Almost surely, 2^18530673 is an apocalyptic number.

It is an amenable number.

18530673 is a deficient number, since it is larger than the sum of its proper divisors (10996239).

18530673 is a wasteful number, since it uses less digits than its factorization.

18530673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461 (or 3454 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 18530673 is about 4304.7268206008. The cubic root of 18530673 is about 264.6247114459.

The spelling of 18530673 in words is "eighteen million, five hundred thirty thousand, six hundred seventy-three".