18473614573 has 2 divisors, whose sum is σ = 18473614574. Its totient is φ = 18473614572.

The previous prime is 18473614571. The next prime is 18473614639. The reversal of 18473614573 is 37541637481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10276485129 + 8197129444 = 101373^2 + 90538^2 .

It is a cyclic number.

It is not a de Polignac number, because 18473614573 - 2¹ = 18473614571 is a prime.

Together with 18473614571, 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 (18473614571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236807286 + 9236807287.

It is an arithmetic number, because the mean of its divisors is an integer number (9236807287).

Almost surely, 2^18473614573 is an apocalyptic number.

It is an amenable number.

18473614573 is a deficient number, since it is larger than the sum of its proper divisors (1).

18473614573 is an equidigital number, since it uses as much as digits as its factorization.

18473614573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 49.

The spelling of 18473614573 in words is "eighteen billion, four hundred seventy-three million, six hundred fourteen thousand, five hundred seventy-three".