199564983 has 6 divisors (see below), whose sum is σ = 288260544. Its totient is φ = 133043316.

The previous prime is 199564943. The next prime is 199565029. The reversal of 199564983 is 389465991.

It is not a de Polignac number, because 199564983 - 2⁶ = 199564919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199564943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11086935 + ... + 11086952.

It is an arithmetic number, because the mean of its divisors is an integer number (48043424).

Almost surely, 2^199564983 is an apocalyptic number.

199564983 is a deficient number, since it is larger than the sum of its proper divisors (88695561).

199564983 is a wasteful number, since it uses less digits than its factorization.

199564983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22173893 (or 22173890 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 199564983 is about 14126.7470777954. The cubic root of 199564983 is about 584.3792407177.

The spelling of 199564983 in words is "one hundred ninety-nine million, five hundred sixty-four thousand, nine hundred eighty-three".