45188219 has 2 divisors, whose sum is σ = 45188220. Its totient is φ = 45188218.

The previous prime is 45188207. The next prime is 45188233. The reversal of 45188219 is 91288154.

45188219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45188219 - 2²⁰ = 44139643 is a prime.

It is a super-2 number, since 2×45188219² = 4083950272783922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45188419) 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, 22594109 + 22594110.

It is an arithmetic number, because the mean of its divisors is an integer number (22594110).

Almost surely, 2^45188219 is an apocalyptic number.

45188219 is a deficient number, since it is larger than the sum of its proper divisors (1).

45188219 is an equidigital number, since it uses as much as digits as its factorization.

45188219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 38.

The square root of 45188219 is about 6722.2183094571. The cubic root of 45188219 is about 356.1845479838.

The spelling of 45188219 in words is "forty-five million, one hundred eighty-eight thousand, two hundred nineteen".