199892629171 has 4 divisors (see below), whose sum is σ = 208583613072. Its totient is φ = 191201645272.

The previous prime is 199892629163. The next prime is 199892629213. The reversal of 199892629171 is 171926298991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199892629171 - 2³ = 199892629163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199892629141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4345491916 + ... + 4345491961.

It is an arithmetic number, because the mean of its divisors is an integer number (52145903268).

Almost surely, 2^199892629171 is an apocalyptic number.

199892629171 is a deficient number, since it is larger than the sum of its proper divisors (8690983901).

199892629171 is an equidigital number, since it uses as much as digits as its factorization.

199892629171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8690983900.

The product of its digits is 8817984, while the sum is 64.

The spelling of 199892629171 in words is "one hundred ninety-nine billion, eight hundred ninety-two million, six hundred twenty-nine thousand, one hundred seventy-one".