199883538 has 48 divisors (see below), whose sum is σ = 451659936. Its totient is φ = 66251520.

The previous prime is 199883503. The next prime is 199883539. The reversal of 199883538 is 835388991.

199883538 is a `hidden beast` number, since 19 + 98 + 8 + 3 + 538 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (199883539) 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 23 ways as a sum of consecutive naturals, for example, 92733 + ... + 94863.

It is an arithmetic number, because the mean of its divisors is an integer number (9409582).

Almost surely, 2^199883538 is an apocalyptic number.

199883538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 199883538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225829968).

199883538 is an abundant number, since it is smaller than the sum of its proper divisors (251776398).

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

199883538 is a wasteful number, since it uses less digits than its factorization.

199883538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341 (or 2329 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 199883538 is about 14138.0174706357. The cubic root of 199883538 is about 584.6900132844.

The spelling of 199883538 in words is "one hundred ninety-nine million, eight hundred eighty-three thousand, five hundred thirty-eight".