199144543 has 16 divisors (see below), whose sum is σ = 218444800. Its totient is φ = 180442080.

The previous prime is 199144523. The next prime is 199144549. The reversal of 199144543 is 345441991.

It is not a de Polignac number, because 199144543 - 2¹⁷ = 199013471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199144496 and 199144505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199144549) 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 15 ways as a sum of consecutive naturals, for example, 216238 + ... + 217156.

It is an arithmetic number, because the mean of its divisors is an integer number (13652800).

Almost surely, 2^199144543 is an apocalyptic number.

199144543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

199144543 is a deficient number, since it is larger than the sum of its proper divisors (19300257).

199144543 is a wasteful number, since it uses less digits than its factorization.

199144543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222.

The product of its digits is 77760, while the sum is 40.

The square root of 199144543 is about 14111.8582405011. The cubic root of 199144543 is about 583.9685655424.

The spelling of 199144543 in words is "one hundred ninety-nine million, one hundred forty-four thousand, five hundred forty-three".