199128013 has 24 divisors (see below), whose sum is σ = 236882880. Its totient is φ = 166864320.

The previous prime is 199128011. The next prime is 199128019. The reversal of 199128013 is 310821991.

It is not a de Polignac number, because 199128013 - 2¹ = 199128011 is a prime.

It is a super-2 number, since 2×199128013² = 79303931122656338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199128013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199128011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 640128 + ... + 640438.

It is an arithmetic number, because the mean of its divisors is an integer number (9870120).

Almost surely, 2^199128013 is an apocalyptic number.

It is an amenable number.

199128013 is a deficient number, since it is larger than the sum of its proper divisors (37754867).

199128013 is a wasteful number, since it uses less digits than its factorization.

199128013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 199128013 is about 14111.2725506951. The cubic root of 199128013 is about 583.9524076513.

The spelling of 199128013 in words is "one hundred ninety-nine million, one hundred twenty-eight thousand, thirteen".