19642324147 has 2 divisors, whose sum is σ = 19642324148. Its totient is φ = 19642324146.

The previous prime is 19642324123. The next prime is 19642324159. The reversal of 19642324147 is 74142324691.

It is a strong prime.

It is an emirp because it is prime and its reverse (74142324691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19642324147 - 2¹¹ = 19642322099 is a prime.

It is not a weakly prime, because it can be changed into another prime (19642324187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9821162073 + 9821162074.

It is an arithmetic number, because the mean of its divisors is an integer number (9821162074).

Almost surely, 2^19642324147 is an apocalyptic number.

19642324147 is a deficient number, since it is larger than the sum of its proper divisors (1).

19642324147 is an equidigital number, since it uses as much as digits as its factorization.

19642324147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The spelling of 19642324147 in words is "nineteen billion, six hundred forty-two million, three hundred twenty-four thousand, one hundred forty-seven".