136143018 has 80 divisors (see below), whose sum is σ = 350396640. Its totient is φ = 39074400.

The previous prime is 136143013. The next prime is 136143043. The reversal of 136143018 is 810341631.

136143018 is a `hidden beast` number, since 1 + 3 + 614 + 30 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136142982 and 136143000.

It is not an unprimeable number, because it can be changed into a prime (136143011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31848 + ... + 35868.

It is an arithmetic number, because the mean of its divisors is an integer number (4379958).

Almost surely, 2^136143018 is an apocalyptic number.

136143018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136143018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175198320).

136143018 is an abundant number, since it is smaller than the sum of its proper divisors (214253622).

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

136143018 is a wasteful number, since it uses less digits than its factorization.

136143018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065 (or 4056 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 136143018 is about 11668.0340246333. The cubic root of 136143018 is about 514.4365194652.

Adding to 136143018 its reverse (810341631), we get a palindrome (946484649).

The spelling of 136143018 in words is "one hundred thirty-six million, one hundred forty-three thousand, eighteen".