18163409100 has 144 divisors (see below), whose sum is σ = 55402704000. Its totient is φ = 4581688320.

The previous prime is 18163409009. The next prime is 18163409101. The reversal of 18163409100 is 190436181.

It is not an unprimeable number, because it can be changed into a prime (18163409101) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4483876 + ... + 4487924.

It is an arithmetic number, because the mean of its divisors is an integer number (384741000).

Almost surely, 2^18163409100 is an apocalyptic number.

18163409100 is a gapful number since it is divisible by the number (10) 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 18163409100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27701352000).

18163409100 is an abundant number, since it is smaller than the sum of its proper divisors (37239294900).

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

18163409100 is a wasteful number, since it uses less digits than its factorization.

18163409100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872 (or 4865 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 18163409100 in words is "eighteen billion, one hundred sixty-three million, four hundred nine thousand, one hundred".