163430507 has 2 divisors, whose sum is σ = 163430508. Its totient is φ = 163430506.

The previous prime is 163430497. The next prime is 163430513. The reversal of 163430507 is 705034361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163430507 - 2⁸ = 163430251 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 163430507.

It is not a weakly prime, because it can be changed into another prime (163430587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81715253 + 81715254.

It is an arithmetic number, because the mean of its divisors is an integer number (81715254).

Almost surely, 2^163430507 is an apocalyptic number.

163430507 is a deficient number, since it is larger than the sum of its proper divisors (1).

163430507 is an equidigital number, since it uses as much as digits as its factorization.

163430507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 163430507 is about 12783.9941724017. The cubic root of 163430507 is about 546.7360481458.

Adding to 163430507 its reverse (705034361), we get a palindrome (868464868).

The spelling of 163430507 in words is "one hundred sixty-three million, four hundred thirty thousand, five hundred seven".