163969349 has 2 divisors, whose sum is σ = 163969350. Its totient is φ = 163969348.

The previous prime is 163969343. The next prime is 163969381. The reversal of 163969349 is 943969361.

163969349 = 7392² + 7393² + 7394².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157502500 + 6466849 = 12550^2 + 2543^2 .

It is an emirp because it is prime and its reverse (943969361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163969349 is a prime.

It is a super-2 number, since 2×163969349² = 53771894822967602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163969297 and 163969306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163969343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81984674 + 81984675.

It is an arithmetic number, because the mean of its divisors is an integer number (81984675).

Almost surely, 2^163969349 is an apocalyptic number.

It is an amenable number.

163969349 is a deficient number, since it is larger than the sum of its proper divisors (1).

163969349 is an equidigital number, since it uses as much as digits as its factorization.

163969349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 50.

The square root of 163969349 is about 12805.0516984509. The cubic root of 163969349 is about 547.3362648488.

The spelling of 163969349 in words is "one hundred sixty-three million, nine hundred sixty-nine thousand, three hundred forty-nine".