209454330941 has 2 divisors, whose sum is σ = 209454330942. Its totient is φ = 209454330940.

The previous prime is 209454330937. The next prime is 209454330947. The reversal of 209454330941 is 149033454902.

209454330941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127606842841 + 81847488100 = 357221^2 + 286090^2 .

It is a cyclic number.

It is not a de Polignac number, because 209454330941 - 2² = 209454330937 is a prime.

It is a super-2 number, since 2×209454330941² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 209454330892 and 209454330901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209454330947) 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, 104727165470 + 104727165471.

It is an arithmetic number, because the mean of its divisors is an integer number (104727165471).

Almost surely, 2^209454330941 is an apocalyptic number.

It is an amenable number.

209454330941 is a deficient number, since it is larger than the sum of its proper divisors (1).

209454330941 is an equidigital number, since it uses as much as digits as its factorization.

209454330941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 209454330941 in words is "two hundred nine billion, four hundred fifty-four million, three hundred thirty thousand, nine hundred forty-one".