199144573 has 2 divisors, whose sum is σ = 199144574. Its totient is φ = 199144572.

The previous prime is 199144571. The next prime is 199144601. The reversal of 199144573 is 375441991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130370724 + 68773849 = 11418^2 + 8293^2 .

It is a cyclic number.

It is not a de Polignac number, because 199144573 - 2¹ = 199144571 is a prime.

Together with 199144571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199144571) 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 as a sum of consecutive naturals, namely, 99572286 + 99572287.

It is an arithmetic number, because the mean of its divisors is an integer number (99572287).

Almost surely, 2^199144573 is an apocalyptic number.

It is an amenable number.

199144573 is a deficient number, since it is larger than the sum of its proper divisors (1).

199144573 is an equidigital number, since it uses as much as digits as its factorization.

199144573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 199144573 is about 14111.8593034370. The cubic root of 199144573 is about 583.9685948662.

It can be divided in two parts, 1991 and 44573, that added together give a palindrome (46564).

The spelling of 199144573 in words is "one hundred ninety-nine million, one hundred forty-four thousand, five hundred seventy-three".