18768779603 has 16 divisors (see below), whose sum is σ = 22798195200. Its totient is φ = 15083604096.

The previous prime is 18768779599. The next prime is 18768779641. The reversal of 18768779603 is 30697786781.

It is a cyclic number.

It is not a de Polignac number, because 18768779603 - 2² = 18768779599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18768779203) 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 15 ways as a sum of consecutive naturals, for example, 268553 + ... + 331146.

It is an arithmetic number, because the mean of its divisors is an integer number (1424887200).

Almost surely, 2^18768779603 is an apocalyptic number.

18768779603 is a deficient number, since it is larger than the sum of its proper divisors (4029415597).

18768779603 is a wasteful number, since it uses less digits than its factorization.

18768779603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599986.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 18768779603 in words is "eighteen billion, seven hundred sixty-eight million, seven hundred seventy-nine thousand, six hundred three".