135684219 has 8 divisors (see below), whose sum is σ = 197358912. Its totient is φ = 82232840.

The previous prime is 135684209. The next prime is 135684223. The reversal of 135684219 is 912486531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135684219 - 2⁷ = 135684091 is a prime.

It is a super-2 number, since 2×135684219² = 36820414571279922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135684209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2055789 + ... + 2055854.

It is an arithmetic number, because the mean of its divisors is an integer number (24669864).

Almost surely, 2^135684219 is an apocalyptic number.

135684219 is a deficient number, since it is larger than the sum of its proper divisors (61674693).

135684219 is a wasteful number, since it uses less digits than its factorization.

135684219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111657.

The product of its digits is 51840, while the sum is 39.

The square root of 135684219 is about 11648.3569227595. The cubic root of 135684219 is about 513.8579891510.

The spelling of 135684219 in words is "one hundred thirty-five million, six hundred eighty-four thousand, two hundred nineteen".