135618 has 16 divisors (see below), whose sum is σ = 310080. Its totient is φ = 38736.

The previous prime is 135617. The next prime is 135623. The reversal of 135618 is 816531.

It is not an unprimeable number, because it can be changed into a prime (135613) 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, 1573 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (19380).

2¹³⁵⁶¹⁸ is an apocalyptic number.

135618 is an abundant number, since it is smaller than the sum of its proper divisors (174462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135618 is a wasteful number, since it uses less digits than its factorization.

135618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241.

The product of its digits is 720, while the sum is 24.

The square root of 135618 is about 368.2634926245. The cubic root of 135618 is about 51.3774381542.

The spelling of 135618 in words is "one hundred thirty-five thousand, six hundred eighteen".