136857018 has 16 divisors (see below), whose sum is σ = 274201920. Its totient is φ = 45537696.

The previous prime is 136856999. The next prime is 136857029. The reversal of 136857018 is 810758631.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16630 + ... + 23457.

It is an arithmetic number, because the mean of its divisors is an integer number (17137620).

Almost surely, 2^136857018 is an apocalyptic number.

136857018 is an abundant number, since it is smaller than the sum of its proper divisors (137344902).

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

136857018 is a wasteful number, since it uses less digits than its factorization.

136857018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40661.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 136857018 is about 11698.5904279105. The cubic root of 136857018 is about 515.3342700598.

The spelling of 136857018 in words is "one hundred thirty-six million, eight hundred fifty-seven thousand, eighteen".