163354661 has 2 divisors, whose sum is σ = 163354662. Its totient is φ = 163354660.

The previous prime is 163354637. The next prime is 163354727. The reversal of 163354661 is 166453361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160528900 + 2825761 = 12670^2 + 1681^2 .

It is a cyclic number.

It is not a de Polignac number, because 163354661 - 2¹⁴ = 163338277 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163354561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81677330 + 81677331.

It is an arithmetic number, because the mean of its divisors is an integer number (81677331).

Almost surely, 2^163354661 is an apocalyptic number.

It is an amenable number.

163354661 is a deficient number, since it is larger than the sum of its proper divisors (1).

163354661 is an equidigital number, since it uses as much as digits as its factorization.

163354661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 35.

The square root of 163354661 is about 12781.0273843694. The cubic root of 163354661 is about 546.6514573318.

The spelling of 163354661 in words is "one hundred sixty-three million, three hundred fifty-four thousand, six hundred sixty-one".