18594973 has 2 divisors, whose sum is σ = 18594974. Its totient is φ = 18594972.

The previous prime is 18594967. The next prime is 18595007. The reversal of 18594973 is 37949581.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13410244 + 5184729 = 3662^2 + 2277^2 .

It is a cyclic number.

It is not a de Polignac number, because 18594973 - 2¹³ = 18586781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18504973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9297486 + 9297487.

It is an arithmetic number, because the mean of its divisors is an integer number (9297487).

Almost surely, 2^18594973 is an apocalyptic number.

It is an amenable number.

18594973 is a deficient number, since it is larger than the sum of its proper divisors (1).

18594973 is an equidigital number, since it uses as much as digits as its factorization.

18594973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 18594973 is about 4312.1888873286. The cubic root of 18594973 is about 264.9304338577.

The spelling of 18594973 in words is "eighteen million, five hundred ninety-four thousand, nine hundred seventy-three".