199348444069 has 2 divisors, whose sum is σ = 199348444070. Its totient is φ = 199348444068.

The previous prime is 199348444063. The next prime is 199348444187. The reversal of 199348444069 is 960444843991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109385640225 + 89962803844 = 330735^2 + 299938^2 .

It is a cyclic number.

It is not a de Polignac number, because 199348444069 - 2²³ = 199340055461 is a prime.

It is a super-2 number, since 2×199348444069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199348443998 and 199348444016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199348444063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99674222034 + 99674222035.

It is an arithmetic number, because the mean of its divisors is an integer number (99674222035).

Almost surely, 2^199348444069 is an apocalyptic number.

It is an amenable number.

199348444069 is a deficient number, since it is larger than the sum of its proper divisors (1).

199348444069 is an equidigital number, since it uses as much as digits as its factorization.

199348444069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 199348444069 in words is "one hundred ninety-nine billion, three hundred forty-eight million, four hundred forty-four thousand, sixty-nine".