18441151872 has 256 divisors, whose sum is σ = 58958807040. Its totient is φ = 5031936000.

The previous prime is 18441151867. The next prime is 18441151889. The reversal of 18441151872 is 27815114481.

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, 2247297 + ... + 2255487.

It is an arithmetic number, because the mean of its divisors is an integer number (230307840).

Almost surely, 2^18441151872 is an apocalyptic number.

18441151872 is a gapful number since it is divisible by the number (12) 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 18441151872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29479403520).

18441151872 is an abundant number, since it is smaller than the sum of its proper divisors (40517655168).

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

18441151872 is a wasteful number, since it uses less digits than its factorization.

18441151872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8273 (or 8261 counting only the distinct ones).

The product of its digits is 71680, while the sum is 42.

The spelling of 18441151872 in words is "eighteen billion, four hundred forty-one million, one hundred fifty-one thousand, eight hundred seventy-two".