18385472763 has 72 divisors (see below), whose sum is σ = 31841173728. Its totient is φ = 10013262336.

The previous prime is 18385472761. The next prime is 18385472771. The reversal of 18385472763 is 36727458381.

It is a happy number.

18385472763 is a `hidden beast` number, since 1 + 8 + 38 + 547 + 2 + 7 + 63 = 666.

It is not a de Polignac number, because 18385472763 - 2¹ = 18385472761 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18385472761) 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 71 ways as a sum of consecutive naturals, for example, 11230381 + ... + 11232017.

It is an arithmetic number, because the mean of its divisors is an integer number (442238524).

Almost surely, 2^18385472763 is an apocalyptic number.

18385472763 is a deficient number, since it is larger than the sum of its proper divisors (13455700965).

18385472763 is a wasteful number, since it uses less digits than its factorization.

18385472763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2007 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 18385472763 in words is "eighteen billion, three hundred eighty-five million, four hundred seventy-two thousand, seven hundred sixty-three".