163440701 has 2 divisors, whose sum is σ = 163440702. Its totient is φ = 163440700.

The previous prime is 163440677. The next prime is 163440713. The reversal of 163440701 is 107044361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138180025 + 25260676 = 11755^2 + 5026^2 .

It is an emirp because it is prime and its reverse (107044361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163440701 - 2¹⁰ = 163439677 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 (163440751) 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, 81720350 + 81720351.

It is an arithmetic number, because the mean of its divisors is an integer number (81720351).

Almost surely, 2^163440701 is an apocalyptic number.

It is an amenable number.

163440701 is a deficient number, since it is larger than the sum of its proper divisors (1).

163440701 is an equidigital number, since it uses as much as digits as its factorization.

163440701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 163440701 is about 12784.3928678682. The cubic root of 163440701 is about 546.7474154878.

The spelling of 163440701 in words is "one hundred sixty-three million, four hundred forty thousand, seven hundred one".