135678419 has 2 divisors, whose sum is σ = 135678420. Its totient is φ = 135678418.

The previous prime is 135678409. The next prime is 135678437. The reversal of 135678419 is 914876531.

It is a weak prime.

It is an emirp because it is prime and its reverse (914876531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135678419 - 2⁸ = 135678163 is a prime.

It is a super-2 number, since 2×135678419² = 36817266764679122, 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 135678419.

It is not a weakly prime, because it can be changed into another prime (135678409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67839209 + 67839210.

It is an arithmetic number, because the mean of its divisors is an integer number (67839210).

Almost surely, 2^135678419 is an apocalyptic number.

135678419 is a deficient number, since it is larger than the sum of its proper divisors (1).

135678419 is an equidigital number, since it uses as much as digits as its factorization.

135678419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 135678419 is about 11648.1079579475. The cubic root of 135678419 is about 513.8506672020.

The spelling of 135678419 in words is "one hundred thirty-five million, six hundred seventy-eight thousand, four hundred nineteen".