18031641128 has 16 divisors (see below), whose sum is σ = 33854842080. Its totient is φ = 9003683248.

The previous prime is 18031641119. The next prime is 18031641169. The reversal of 18031641128 is 82114613081.

It is a super-2 number, since 2×18031641128² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1510850 + ... + 1522737.

It is an arithmetic number, because the mean of its divisors is an integer number (2115927630).

Almost surely, 2^18031641128 is an apocalyptic number.

It is an amenable number.

18031641128 is a deficient number, since it is larger than the sum of its proper divisors (15823200952).

18031641128 is a wasteful number, since it uses less digits than its factorization.

18031641128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034336 (or 3034332 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 18031641128 in words is "eighteen billion, thirty-one million, six hundred forty-one thousand, one hundred twenty-eight".