18673523713 has 16 divisors (see below), whose sum is σ = 20251707840. Its totient is φ = 17115996096.

The previous prime is 18673523681. The next prime is 18673523731. The reversal of 18673523713 is 31732537681.

It is a cyclic number.

It is not a de Polignac number, because 18673523713 - 2⁵ = 18673523681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18673523753) 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 15 ways as a sum of consecutive naturals, for example, 1139806 + ... + 1156072.

It is an arithmetic number, because the mean of its divisors is an integer number (1265731740).

Almost surely, 2^18673523713 is an apocalyptic number.

18673523713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18673523713 is a deficient number, since it is larger than the sum of its proper divisors (1578184127).

18673523713 is a wasteful number, since it uses less digits than its factorization.

18673523713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16896.

The product of its digits is 635040, while the sum is 46.

The spelling of 18673523713 in words is "eighteen billion, six hundred seventy-three million, five hundred twenty-three thousand, seven hundred thirteen".