199063881 has 9 divisors (see below), whose sum is σ = 287597869. Its totient is φ = 132681036.

The previous prime is 199063861. The next prime is 199063883. The reversal of 199063881 is 188360991.

The square root of 199063881 is 14109.

It is a perfect power (a square), and thus also a powerful number.

199063881 is a `hidden beast` number, since 1 + 9 + 9 + 0 + 638 + 8 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 199063881 - 2¹⁷ = 198932809 is a prime.

It is a super-2 number, since 2×199063881² = 79252857437564322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199063883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39976 + ... + 44678.

Almost surely, 2^199063881 is an apocalyptic number.

199063881 is the 14109-th square number.

199063881 is the 7055-th centered octagonal number.

It is an amenable number.

199063881 is a deficient number, since it is larger than the sum of its proper divisors (88533988).

199063881 is an frugal number, since it uses more digits than its factorization.

199063881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9412 (or 4706 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The cubic root of 199063881 is about 583.8897108691.

The spelling of 199063881 in words is "one hundred ninety-nine million, sixty-three thousand, eight hundred eighty-one".