16824181338 has 12 divisors (see below), whose sum is σ = 36452392938. Its totient is φ = 5608060440.

The previous prime is 16824181271. The next prime is 16824181343. The reversal of 16824181338 is 83318142861.

It can be written as a sum of positive squares in only one way, i.e., 9307811529 + 7516369809 = 96477^2 + 86697^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16824181293 and 16824181302.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 467338353 + ... + 467338388.

Almost surely, 2^16824181338 is an apocalyptic number.

16824181338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16824181338 is an abundant number, since it is smaller than the sum of its proper divisors (19628211600).

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

16824181338 is a wasteful number, since it uses less digits than its factorization.

16824181338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934676749 (or 934676746 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 16824181338 in words is "sixteen billion, eight hundred twenty-four million, one hundred eighty-one thousand, three hundred thirty-eight".