5645381219 has 2 divisors, whose sum is σ = 5645381220. Its totient is φ = 5645381218.

The previous prime is 5645381191. The next prime is 5645381239. The reversal of 5645381219 is 9121835465.

It is a happy number.

5645381219 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5645381219 - 2⁸ = 5645380963 is a prime.

It is a super-2 number, since 2×5645381219² = 63740658215675851922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5645381219.

It is not a weakly prime, because it can be changed into another prime (5645381239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822690609 + 2822690610.

It is an arithmetic number, because the mean of its divisors is an integer number (2822690610).

Almost surely, 2^5645381219 is an apocalyptic number.

5645381219 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645381219 is an equidigital number, since it uses as much as digits as its factorization.

5645381219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The square root of 5645381219 is about 75135.7519360790. The cubic root of 5645381219 is about 1780.5920282725.

The spelling of 5645381219 in words is "five billion, six hundred forty-five million, three hundred eighty-one thousand, two hundred nineteen".