168353641 has 2 divisors, whose sum is σ = 168353642. Its totient is φ = 168353640.

The previous prime is 168353621. The next prime is 168353657. The reversal of 168353641 is 146353861.

168353641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121088016 + 47265625 = 11004^2 + 6875^2 .

It is a cyclic number.

It is not a de Polignac number, because 168353641 - 2¹¹ = 168351593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168353641.

It is not a weakly prime, because it can be changed into another prime (168353611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84176820 + 84176821.

It is an arithmetic number, because the mean of its divisors is an integer number (84176821).

Almost surely, 2^168353641 is an apocalyptic number.

It is an amenable number.

168353641 is a deficient number, since it is larger than the sum of its proper divisors (1).

168353641 is an equidigital number, since it uses as much as digits as its factorization.

168353641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 168353641 is about 12975.1162229862. The cubic root of 168353641 is about 552.1717340492.

The spelling of 168353641 in words is "one hundred sixty-eight million, three hundred fifty-three thousand, six hundred forty-one".