18449056603 has 4 divisors (see below), whose sum is σ = 18499326880. Its totient is φ = 18398786328.

The previous prime is 18449056597. The next prime is 18449056607. The reversal of 18449056603 is 30665094481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18449056603 - 2¹³ = 18449048411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18449056607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25134588 + ... + 25135321.

It is an arithmetic number, because the mean of its divisors is an integer number (4624831720).

Almost surely, 2^18449056603 is an apocalyptic number.

18449056603 is a deficient number, since it is larger than the sum of its proper divisors (50270277).

18449056603 is an equidigital number, since it uses as much as digits as its factorization.

18449056603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50270276.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 18449056603 in words is "eighteen billion, four hundred forty-nine million, fifty-six thousand, six hundred three".