135684918 has 24 divisors (see below), whose sum is σ = 294840000. Its totient is φ = 45096624.

The previous prime is 135684907. The next prime is 135684919. The reversal of 135684918 is 819486531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135684919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4518 + ... + 17081.

It is an arithmetic number, because the mean of its divisors is an integer number (12285000).

Almost surely, 2^135684918 is an apocalyptic number.

135684918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135684918 is an abundant number, since it is smaller than the sum of its proper divisors (159155082).

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

135684918 is a wasteful number, since it uses less digits than its factorization.

135684918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956 (or 21953 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 135684918 is about 11648.3869269526. The cubic root of 135684918 is about 513.8588715580.

The spelling of 135684918 in words is "one hundred thirty-five million, six hundred eighty-four thousand, nine hundred eighteen".