163365403 has 2 divisors, whose sum is σ = 163365404. Its totient is φ = 163365402.

The previous prime is 163365347. The next prime is 163365409. The reversal of 163365403 is 304563361.

163365403 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 is a cyclic number.

It is not a de Polignac number, because 163365403 - 2¹³ = 163357211 is a prime.

It is not a weakly prime, because it can be changed into another prime (163365409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81682701 + 81682702.

It is an arithmetic number, because the mean of its divisors is an integer number (81682702).

Almost surely, 2^163365403 is an apocalyptic number.

163365403 is a deficient number, since it is larger than the sum of its proper divisors (1).

163365403 is an equidigital number, since it uses as much as digits as its factorization.

163365403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 163365403 is about 12781.4476097193. The cubic root of 163365403 is about 546.6634394432.

The spelling of 163365403 in words is "one hundred sixty-three million, three hundred sixty-five thousand, four hundred three".