135278018 has 4 divisors (see below), whose sum is σ = 202917030. Its totient is φ = 67639008.

The previous prime is 135278009. The next prime is 135278029. The reversal of 135278018 is 810872531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 129436129 + 5841889 = 11377^2 + 2417^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33819503 + ... + 33819506.

Almost surely, 2^135278018 is an apocalyptic number.

135278018 is a deficient number, since it is larger than the sum of its proper divisors (67639012).

135278018 is an equidigital number, since it uses as much as digits as its factorization.

135278018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67639011.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 135278018 is about 11630.9078751403. The cubic root of 135278018 is about 513.3446937198.

The spelling of 135278018 in words is "one hundred thirty-five million, two hundred seventy-eight thousand, eighteen".