136197618 has 8 divisors (see below), whose sum is σ = 272395248. Its totient is φ = 45399204.

The previous prime is 136197617. The next prime is 136197619. The reversal of 136197618 is 816791631.

136197618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (136197617) and next prime (136197619).

It is a sphenic number, since it is the product of 3 distinct primes.

136197618 is an admirable number.

It is a super-3 number, since 3×136197618³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 136197618.

It is not an unprimeable number, because it can be changed into a prime (136197617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11349796 + ... + 11349807.

It is an arithmetic number, because the mean of its divisors is an integer number (34049406).

Almost surely, 2^136197618 is an apocalyptic number.

136197618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

136197618 is a wasteful number, since it uses less digits than its factorization.

136197618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22699608.

The product of its digits is 54432, while the sum is 42.

The square root of 136197618 is about 11670.3735158734. The cubic root of 136197618 is about 514.5052816642.

The spelling of 136197618 in words is "one hundred thirty-six million, one hundred ninety-seven thousand, six hundred eighteen".