18401130328 has 48 divisors (see below), whose sum is σ = 40151894400. Its totient is φ = 7882902720.

The previous prime is 18401130313. The next prime is 18401130343. The reversal of 18401130328 is 82303110481.

It is an interprime number because it is at equal distance from previous prime (18401130313) and next prime (18401130343).

It is a self number, because there is not a number n which added to its sum of digits gives 18401130328.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1084873 + ... + 1101703.

It is an arithmetic number, because the mean of its divisors is an integer number (836497800).

Almost surely, 2^18401130328 is an apocalyptic number.

It is an amenable number.

18401130328 is an abundant number, since it is smaller than the sum of its proper divisors (21750764072).

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

18401130328 is a wasteful number, since it uses less digits than its factorization.

18401130328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19640 (or 19629 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 18401130328 in words is "eighteen billion, four hundred one million, one hundred thirty thousand, three hundred twenty-eight".