18673459680 has 48 divisors (see below), whose sum is σ = 58821399504. Its totient is φ = 4979589120.

The previous prime is 18673459669. The next prime is 18673459681. The reversal of 18673459680 is 8695437681.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 18673459680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18673459681) 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, 19451041 + ... + 19452000.

It is an arithmetic number, because the mean of its divisors is an integer number (1225445823).

Almost surely, 2^18673459680 is an apocalyptic number.

18673459680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18673459680 is an abundant number, since it is smaller than the sum of its proper divisors (40147939824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18673459680 is a wasteful number, since it uses less digits than its factorization.

18673459680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38903059 (or 38903051 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 18673459680 in words is "eighteen billion, six hundred seventy-three million, four hundred fifty-nine thousand, six hundred eighty".