199043563 has 4 divisors (see below), whose sum is σ = 209519560. Its totient is φ = 188567568.

The previous prime is 199043557. The next prime is 199043569. The reversal of 199043563 is 365340991.

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

It is an interprime number because it is at equal distance from previous prime (199043557) and next prime (199043569).

It is a cyclic number.

It is not a de Polignac number, because 199043563 - 2⁹ = 199043051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199043569) 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, 5237970 + ... + 5238007.

It is an arithmetic number, because the mean of its divisors is an integer number (52379890).

Almost surely, 2^199043563 is an apocalyptic number.

199043563 is a deficient number, since it is larger than the sum of its proper divisors (10475997).

199043563 is a wasteful number, since it uses less digits than its factorization.

199043563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10475996.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 199043563 is about 14108.2799447700. The cubic root of 199043563 is about 583.8698447593.

The spelling of 199043563 in words is "one hundred ninety-nine million, forty-three thousand, five hundred sixty-three".