19163147 has 2 divisors, whose sum is σ = 19163148. Its totient is φ = 19163146.

The previous prime is 19163143. The next prime is 19163161. The reversal of 19163147 is 74136191.

It is a weak prime.

It is an emirp because it is prime and its reverse (74136191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19163147 - 2² = 19163143 is a prime.

It is not a weakly prime, because it can be changed into another prime (19163143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9581573 + 9581574.

It is an arithmetic number, because the mean of its divisors is an integer number (9581574).

Almost surely, 2^19163147 is an apocalyptic number.

19163147 is a deficient number, since it is larger than the sum of its proper divisors (1).

19163147 is an equidigital number, since it uses as much as digits as its factorization.

19163147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 19163147 is about 4377.5731861386. The cubic root of 19163147 is about 267.6017466034.

The spelling of 19163147 in words is "nineteen million, one hundred sixty-three thousand, one hundred forty-seven".