199156227 has 16 divisors (see below), whose sum is σ = 271264512. Its totient is φ = 129935520.

The previous prime is 199156213. The next prime is 199156247. The reversal of 199156227 is 722651991.

It is not a de Polignac number, because 199156227 - 2⁷ = 199156099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199156247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28402 + ... + 34712.

It is an arithmetic number, because the mean of its divisors is an integer number (16954032).

Almost surely, 2^199156227 is an apocalyptic number.

199156227 is a deficient number, since it is larger than the sum of its proper divisors (72108285).

199156227 is a wasteful number, since it uses less digits than its factorization.

199156227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538.

The product of its digits is 68040, while the sum is 42.

The square root of 199156227 is about 14112.2722125106. The cubic root of 199156227 is about 583.9799859830.

The spelling of 199156227 in words is "one hundred ninety-nine million, one hundred fifty-six thousand, two hundred twenty-seven".