163930469 has 2 divisors, whose sum is σ = 163930470. Its totient is φ = 163930468.

The previous prime is 163930463. The next prime is 163930471. The reversal of 163930469 is 964039361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151413025 + 12517444 = 12305^2 + 3538^2 .

It is an emirp because it is prime and its reverse (964039361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163930469 - 2⁸ = 163930213 is a prime.

It is a super-2 number, since 2×163930469² = 53746397333119922, which contains 22 as substring.

Together with 163930471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163930463) 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, 81965234 + 81965235.

It is an arithmetic number, because the mean of its divisors is an integer number (81965235).

Almost surely, 2^163930469 is an apocalyptic number.

It is an amenable number.

163930469 is a deficient number, since it is larger than the sum of its proper divisors (1).

163930469 is an equidigital number, since it uses as much as digits as its factorization.

163930469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 163930469 is about 12803.5334576046. The cubic root of 163930469 is about 547.2930004292.

The spelling of 163930469 in words is "one hundred sixty-three million, nine hundred thirty thousand, four hundred sixty-nine".