135918468 has 72 divisors (see below), whose sum is σ = 415763712. Its totient is φ = 36548352.

The previous prime is 135918463. The next prime is 135918469. The reversal of 135918468 is 864819531.

135918468 is a `hidden beast` number, since 13 + 591 + 8 + 46 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (135918463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11580 + ... + 20147.

It is an arithmetic number, because the mean of its divisors is an integer number (5774496).

Almost surely, 2^135918468 is an apocalyptic number.

135918468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135918468 is an abundant number, since it is smaller than the sum of its proper divisors (279845244).

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

135918468 is a wasteful number, since it uses less digits than its factorization.

135918468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31761 (or 31756 counting only the distinct ones).

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

The square root of 135918468 is about 11658.4076099611. The cubic root of 135918468 is about 514.1535320346.

The spelling of 135918468 in words is "one hundred thirty-five million, nine hundred eighteen thousand, four hundred sixty-eight".