18329965728 has 48 divisors (see below), whose sum is σ = 48127859136. Its totient is φ = 6108503040.

The previous prime is 18329965699. The next prime is 18329965769. The reversal of 18329965728 is 82756992381.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416925 + ... + 458787.

It is an arithmetic number, because the mean of its divisors is an integer number (1002663732).

Almost surely, 2^18329965728 is an apocalyptic number.

It is an amenable number.

18329965728 is an abundant number, since it is smaller than the sum of its proper divisors (29797893408).

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

18329965728 is a wasteful number, since it uses less digits than its factorization.

18329965728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46437 (or 46429 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 18329965728 in words is "eighteen billion, three hundred twenty-nine million, nine hundred sixty-five thousand, seven hundred twenty-eight".