18051532128 has 192 divisors, whose sum is σ = 62113443840. Its totient is φ = 4991155200.

The previous prime is 18051532091. The next prime is 18051532189. The reversal of 18051532128 is 82123515081.

18051532128 is a `hidden beast` number, since 18 + 0 + 515 + 3 + 2 + 128 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18051532092 and 18051532101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139348 + ... + 235628.

It is an arithmetic number, because the mean of its divisors is an integer number (323507520).

Almost surely, 2^18051532128 is an apocalyptic number.

18051532128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18051532128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31056721920).

18051532128 is an abundant number, since it is smaller than the sum of its proper divisors (44061911712).

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

18051532128 is a wasteful number, since it uses less digits than its factorization.

18051532128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96338 (or 96324 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 18051532128 in words is "eighteen billion, fifty-one million, five hundred thirty-two thousand, one hundred twenty-eight".