163138705349 has 2 divisors, whose sum is σ = 163138705350. Its totient is φ = 163138705348.

The previous prime is 163138705343. The next prime is 163138705351. The reversal of 163138705349 is 943507831361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158418328324 + 4720377025 = 398018^2 + 68705^2 .

It is an emirp because it is prime and its reverse (943507831361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163138705349 is a prime.

It is a super-2 number, since 2×163138705349² (a number of 23 digits) contains 22 as substring.

Together with 163138705351, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 163138705297 and 163138705306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163138705343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81569352674 + 81569352675.

It is an arithmetic number, because the mean of its divisors is an integer number (81569352675).

Almost surely, 2^163138705349 is an apocalyptic number.

It is an amenable number.

163138705349 is a deficient number, since it is larger than the sum of its proper divisors (1).

163138705349 is an equidigital number, since it uses as much as digits as its factorization.

163138705349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 163138705349 in words is "one hundred sixty-three billion, one hundred thirty-eight million, seven hundred five thousand, three hundred forty-nine".