133306131918 has 8 divisors (see below), whose sum is σ = 266612263848. Its totient is φ = 44435377304.

The previous prime is 133306131899. The next prime is 133306131919. The reversal of 133306131918 is 819131603331.

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

133306131918 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133306131919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11108844321 + ... + 11108844332.

It is an arithmetic number, because the mean of its divisors is an integer number (33326532981).

Almost surely, 2^133306131918 is an apocalyptic number.

133306131918 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.

133306131918 is a wasteful number, since it uses less digits than its factorization.

133306131918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22217688658.

The product of its (nonzero) digits is 34992, while the sum is 39.

The spelling of 133306131918 in words is "one hundred thirty-three billion, three hundred six million, one hundred thirty-one thousand, nine hundred eighteen".