199019963 has 4 divisors (see below), whose sum is σ = 200338128. Its totient is φ = 197701800.

The previous prime is 199019959. The next prime is 199019971. The reversal of 199019963 is 369910991.

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 199019963 - 2² = 199019959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199019923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658856 + ... + 659157.

It is an arithmetic number, because the mean of its divisors is an integer number (50084532).

Almost surely, 2^199019963 is an apocalyptic number.

199019963 is a deficient number, since it is larger than the sum of its proper divisors (1318165).

199019963 is a wasteful number, since it uses less digits than its factorization.

199019963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318164.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 199019963 is about 14107.4435316963. The cubic root of 199019963 is about 583.8467679467.

The spelling of 199019963 in words is "one hundred ninety-nine million, nineteen thousand, nine hundred sixty-three".