199174948369 has 2 divisors, whose sum is σ = 199174948370. Its totient is φ = 199174948368.

The previous prime is 199174948363. The next prime is 199174948409. The reversal of 199174948369 is 963849471991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175990318144 + 23184630225 = 419512^2 + 152265^2 .

It is a cyclic number.

It is not a de Polignac number, because 199174948369 - 2⁵ = 199174948337 is a prime.

It is a super-2 number, since 2×199174948369² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199174948298 and 199174948307.

It is not a weakly prime, because it can be changed into another prime (199174948363) 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 as a sum of consecutive naturals, namely, 99587474184 + 99587474185.

It is an arithmetic number, because the mean of its divisors is an integer number (99587474185).

Almost surely, 2^199174948369 is an apocalyptic number.

It is an amenable number.

199174948369 is a deficient number, since it is larger than the sum of its proper divisors (1).

199174948369 is an equidigital number, since it uses as much as digits as its factorization.

199174948369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105815808, while the sum is 70.

The spelling of 199174948369 in words is "one hundred ninety-nine billion, one hundred seventy-four million, nine hundred forty-eight thousand, three hundred sixty-nine".