135847219 has 2 divisors, whose sum is σ = 135847220. Its totient is φ = 135847218.

The previous prime is 135847213. The next prime is 135847237. The reversal of 135847219 is 912748531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135847219 is a prime.

It is a super-2 number, since 2×135847219² = 36908933820067922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135847213) 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, 67923609 + 67923610.

It is an arithmetic number, because the mean of its divisors is an integer number (67923610).

Almost surely, 2^135847219 is an apocalyptic number.

135847219 is a deficient number, since it is larger than the sum of its proper divisors (1).

135847219 is an equidigital number, since it uses as much as digits as its factorization.

135847219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 135847219 is about 11655.3515176506. The cubic root of 135847219 is about 514.0636758915.

The spelling of 135847219 in words is "one hundred thirty-five million, eight hundred forty-seven thousand, two hundred nineteen".