18676943573 has 16 divisors (see below), whose sum is σ = 19438444800. Its totient is φ = 17923604160.

The previous prime is 18676943539. The next prime is 18676943599. The reversal of 18676943573 is 37534967681.

It is a cyclic number.

It is not a de Polignac number, because 18676943573 - 2²⁰ = 18675894997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18676943773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3609278 + ... + 3614448.

It is an arithmetic number, because the mean of its divisors is an integer number (1214902800).

Almost surely, 2^18676943573 is an apocalyptic number.

It is an amenable number.

18676943573 is a deficient number, since it is larger than the sum of its proper divisors (761501227).

18676943573 is a wasteful number, since it uses less digits than its factorization.

18676943573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932.

The product of its digits is 22861440, while the sum is 59.

The spelling of 18676943573 in words is "eighteen billion, six hundred seventy-six million, nine hundred forty-three thousand, five hundred seventy-three".