163849423 has 2 divisors, whose sum is σ = 163849424. Its totient is φ = 163849422.

The previous prime is 163849403. The next prime is 163849457. The reversal of 163849423 is 324948361.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163849423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163849403) 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, 81924711 + 81924712.

It is an arithmetic number, because the mean of its divisors is an integer number (81924712).

Almost surely, 2^163849423 is an apocalyptic number.

163849423 is a deficient number, since it is larger than the sum of its proper divisors (1).

163849423 is an equidigital number, since it uses as much as digits as its factorization.

163849423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 163849423 is about 12800.3680806452. The cubic root of 163849423 is about 547.2027930371.

The spelling of 163849423 in words is "one hundred sixty-three million, eight hundred forty-nine thousand, four hundred twenty-three".