163309441 has 2 divisors, whose sum is σ = 163309442. Its totient is φ = 163309440.

The previous prime is 163309403. The next prime is 163309451. The reversal of 163309441 is 144903361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 75325041 = 9380^2 + 8679^2 .

It is a cyclic number.

It is not a de Polignac number, because 163309441 - 2¹⁹ = 162785153 is a prime.

It is not a weakly prime, because it can be changed into another prime (163309451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81654720 + 81654721.

It is an arithmetic number, because the mean of its divisors is an integer number (81654721).

Almost surely, 2^163309441 is an apocalyptic number.

It is an amenable number.

163309441 is a deficient number, since it is larger than the sum of its proper divisors (1).

163309441 is an equidigital number, since it uses as much as digits as its factorization.

163309441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 163309441 is about 12779.2582335596. The cubic root of 163309441 is about 546.6010111430.

The spelling of 163309441 in words is "one hundred sixty-three million, three hundred nine thousand, four hundred forty-one".