199995156 has 30 divisors (see below), whose sum is σ = 522827690. Its totient is φ = 66664944.

The previous prime is 199995151. The next prime is 199995163. The reversal of 199995156 is 651599991.

199995156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 164711556 + 35283600 = 12834^2 + 5940^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199995151) 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 9 ways as a sum of consecutive naturals, for example, 308311 + ... + 308958.

Almost surely, 2^199995156 is an apocalyptic number.

It is an amenable number.

199995156 is an abundant number, since it is smaller than the sum of its proper divisors (322832534).

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

199995156 is a wasteful number, since it uses less digits than its factorization.

199995156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617285 (or 617274 counting only the distinct ones).

The product of its digits is 984150, while the sum is 54.

The square root of 199995156 is about 14141.9643614315. The cubic root of 199995156 is about 584.7988262905.

The spelling of 199995156 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, one hundred fifty-six".