135161219 has 2 divisors, whose sum is σ = 135161220. Its totient is φ = 135161218.

The previous prime is 135161189. The next prime is 135161227. The reversal of 135161219 is 912161531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135161219 is a prime.

It is a super-2 number, since 2×135161219² = 36537110243131922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135161191 and 135161200.

It is not a weakly prime, because it can be changed into another prime (135161239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67580609 + 67580610.

It is an arithmetic number, because the mean of its divisors is an integer number (67580610).

Almost surely, 2^135161219 is an apocalyptic number.

135161219 is a deficient number, since it is larger than the sum of its proper divisors (1).

135161219 is an equidigital number, since it uses as much as digits as its factorization.

135161219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 29.

The square root of 135161219 is about 11625.8857296982. The cubic root of 135161219 is about 513.1969106284.

The spelling of 135161219 in words is "one hundred thirty-five million, one hundred sixty-one thousand, two hundred nineteen".