18545149703 has 8 divisors (see below), whose sum is σ = 19637244720. Its totient is φ = 17453188480.

The previous prime is 18545149673. The next prime is 18545149717. The reversal of 18545149703 is 30794154581.

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 18545149703 - 2¹⁰ = 18545148679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18545149783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460253 + ... + 498921.

It is an arithmetic number, because the mean of its divisors is an integer number (2454655590).

Almost surely, 2^18545149703 is an apocalyptic number.

18545149703 is a deficient number, since it is larger than the sum of its proper divisors (1092095017).

18545149703 is a wasteful number, since it uses less digits than its factorization.

18545149703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66897.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 18545149703 in words is "eighteen billion, five hundred forty-five million, one hundred forty-nine thousand, seven hundred three".