352163681 has 2 divisors, whose sum is σ = 352163682. Its totient is φ = 352163680.

The previous prime is 352163677. The next prime is 352163711. The reversal of 352163681 is 186361253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257763025 + 94400656 = 16055^2 + 9716^2 .

It is a cyclic number.

It is not a de Polignac number, because 352163681 - 2² = 352163677 is a prime.

It is a super-2 number, since 2×352163681² = 248038516430939522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (352163671) 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, 176081840 + 176081841.

It is an arithmetic number, because the mean of its divisors is an integer number (176081841).

Almost surely, 2^352163681 is an apocalyptic number.

It is an amenable number.

352163681 is a deficient number, since it is larger than the sum of its proper divisors (1).

352163681 is an equidigital number, since it uses as much as digits as its factorization.

352163681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 352163681 is about 18766.0246456195. The cubic root of 352163681 is about 706.1790915731.

The spelling of 352163681 in words is "three hundred fifty-two million, one hundred sixty-three thousand, six hundred eighty-one".