19620163 has 2 divisors, whose sum is σ = 19620164. Its totient is φ = 19620162.

The previous prime is 19620149. The next prime is 19620191. The reversal of 19620163 is 36102691.

It is an a-pointer prime, because the next prime (19620191) can be obtained adding 19620163 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19620163 - 2⁹ = 19619651 is a prime.

It is a super-2 number, since 2×19620163² = 769901592293138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19620113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9810081 + 9810082.

It is an arithmetic number, because the mean of its divisors is an integer number (9810082).

Almost surely, 2^19620163 is an apocalyptic number.

19620163 is a deficient number, since it is larger than the sum of its proper divisors (1).

19620163 is an equidigital number, since it uses as much as digits as its factorization.

19620163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 19620163 is about 4429.4653176202. The cubic root of 19620163 is about 269.7123731740.

The spelling of 19620163 in words is "nineteen million, six hundred twenty thousand, one hundred sixty-three".