199103505 has 16 divisors (see below), whose sum is σ = 318750720. Its totient is φ = 106126848.

The previous prime is 199103501. The next prime is 199103521. The reversal of 199103505 is 505301991.

It is not a de Polignac number, because 199103505 - 2² = 199103501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199103501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36336 + ... + 41454.

It is an arithmetic number, because the mean of its divisors is an integer number (19921920).

Almost surely, 2^199103505 is an apocalyptic number.

199103505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199103505 is a deficient number, since it is larger than the sum of its proper divisors (119647215).

199103505 is a wasteful number, since it uses less digits than its factorization.

199103505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7720.

The product of its (nonzero) digits is 6075, while the sum is 33.

The square root of 199103505 is about 14110.4041402080. The cubic root of 199103505 is about 583.9284497083.

The spelling of 199103505 in words is "one hundred ninety-nine million, one hundred three thousand, five hundred five".