18955743073 has 8 divisors (see below), whose sum is σ = 19568802816. Its totient is φ = 18342782400.

The previous prime is 18955743071. The next prime is 18955743119. The reversal of 18955743073 is 37034755981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18955743073 - 2¹ = 18955743071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18955743073.

It is not an unprimeable number, because it can be changed into a prime (18955743071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720633 + ... + 746473.

It is an arithmetic number, because the mean of its divisors is an integer number (2446100352).

Almost surely, 2^18955743073 is an apocalyptic number.

It is an amenable number.

18955743073 is a deficient number, since it is larger than the sum of its proper divisors (613059743).

18955743073 is a wasteful number, since it uses less digits than its factorization.

18955743073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49535.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 18955743073 in words is "eighteen billion, nine hundred fifty-five million, seven hundred forty-three thousand, seventy-three".