199026836928 has 168 divisors, whose sum is σ = 595737013248. Its totient is φ = 63408880128.

The previous prime is 199026836927. The next prime is 199026836929. The reversal of 199026836928 is 829638620991.

199026836928 is a `hidden beast` number, since 1 + 9 + 9 + 0 + 268 + 369 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (199026836927) and next prime (199026836929).

It is a super-2 number, since 2×199026836928² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199026836923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19694725 + ... + 19704827.

Almost surely, 2^199026836928 is an apocalyptic number.

199026836928 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 199026836928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297868506624).

199026836928 is an abundant number, since it is smaller than the sum of its proper divisors (396710176320).

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

199026836928 is a wasteful number, since it uses less digits than its factorization.

199026836928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11631 (or 11618 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 199026836928 in words is "one hundred ninety-nine billion, twenty-six million, eight hundred thirty-six thousand, nine hundred twenty-eight".