18493064455 has 8 divisors (see below), whose sum is σ = 22192418304. Its totient is φ = 14793957600.

The previous prime is 18493064419. The next prime is 18493064467. The reversal of 18493064455 is 55446039481.

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

It is not a de Polignac number, because 18493064455 - 2¹⁹ = 18492540167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18493064399 and 18493064408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219145 + ... + 291565.

It is an arithmetic number, because the mean of its divisors is an integer number (2774052288).

Almost surely, 2^18493064455 is an apocalyptic number.

18493064455 is a deficient number, since it is larger than the sum of its proper divisors (3699353849).

18493064455 is an equidigital number, since it uses as much as digits as its factorization.

18493064455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123497.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 18493064455 in words is "eighteen billion, four hundred ninety-three million, sixty-four thousand, four hundred fifty-five".