18519000128 has 14 divisors (see below), whose sum is σ = 36748641006. Its totient is φ = 9259500032.

The previous prime is 18519000121. The next prime is 18519000139. The reversal of 18519000128 is 82100091581.

It can be written as a sum of positive squares in only one way, i.e., 18356998144 + 162001984 = 135488^2 + 12728^2 .

It is not an unprimeable number, because it can be changed into a prime (18519000121) 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 as a sum of consecutive naturals, namely, 144679625 + ... + 144679752.

It is an arithmetic number, because the mean of its divisors is an integer number (2624902929).

Almost surely, 2^18519000128 is an apocalyptic number.

It is an amenable number.

18519000128 is a deficient number, since it is larger than the sum of its proper divisors (18229640878).

18519000128 is an equidigital number, since it uses as much as digits as its factorization.

18519000128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289359389 (or 289359379 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 35.

The spelling of 18519000128 in words is "eighteen billion, five hundred nineteen million, one hundred twenty-eight", and thus it is an aban number.