135488919 has 4 divisors (see below), whose sum is σ = 180651896. Its totient is φ = 90325944.

The previous prime is 135488909. The next prime is 135488923. The reversal of 135488919 is 919884531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919884531 = 3 ⋅306628177.

It is not a de Polignac number, because 135488919 - 2⁸ = 135488663 is a prime.

It is a super-2 number, since 2×135488919² = 36714494343577122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135488909) 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 in 3 ways as a sum of consecutive naturals, for example, 22581484 + ... + 22581489.

It is an arithmetic number, because the mean of its divisors is an integer number (45162974).

Almost surely, 2^135488919 is an apocalyptic number.

135488919 is a deficient number, since it is larger than the sum of its proper divisors (45162977).

135488919 is an equidigital number, since it uses as much as digits as its factorization.

135488919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45162976.

The product of its digits is 311040, while the sum is 48.

The square root of 135488919 is about 11639.9707473859. The cubic root of 135488919 is about 513.6113265825.

The spelling of 135488919 in words is "one hundred thirty-five million, four hundred eighty-eight thousand, nine hundred nineteen".