18676573 has 2 divisors, whose sum is σ = 18676574. Its totient is φ = 18676572.

The previous prime is 18676571. The next prime is 18676583. The reversal of 18676573 is 37567681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12659364 + 6017209 = 3558^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 18676573 - 2¹ = 18676571 is a prime.

Together with 18676571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18676571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9338286 + 9338287.

It is an arithmetic number, because the mean of its divisors is an integer number (9338287).

Almost surely, 2^18676573 is an apocalyptic number.

It is an amenable number.

18676573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18676573 is an equidigital number, since it uses as much as digits as its factorization.

18676573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 18676573 is about 4321.6400821910. The cubic root of 18676573 is about 265.3173982599.

The spelling of 18676573 in words is "eighteen million, six hundred seventy-six thousand, five hundred seventy-three".