199008137 has 8 divisors (see below), whose sum is σ = 215854632. Its totient is φ = 182732800.

The previous prime is 199008113. The next prime is 199008181. The reversal of 199008137 is 731800991.

It can be written as a sum of positive squares in 4 ways, for example, as 3455881 + 195552256 = 1859^2 + 13984^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199008137 - 2²⁰ = 197959561 is a prime.

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 199008137.

It is not an unprimeable number, because it can be changed into a prime (199008637) 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 7 ways as a sum of consecutive naturals, for example, 142064 + ... + 143457.

It is an arithmetic number, because the mean of its divisors is an integer number (26981829).

Almost surely, 2^199008137 is an apocalyptic number.

199008137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

199008137 is a deficient number, since it is larger than the sum of its proper divisors (16846495).

199008137 is a wasteful number, since it uses less digits than its factorization.

199008137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285579.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 199008137 is about 14107.0243850360. The cubic root of 199008137 is about 583.8352034307.

The spelling of 199008137 in words is "one hundred ninety-nine million, eight thousand, one hundred thirty-seven".