133397718 has 16 divisors (see below), whose sum is σ = 270451056. Its totient is φ = 43856640.

The previous prime is 133397713. The next prime is 133397729. The reversal of 133397718 is 817793331.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133397718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133397713) 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 7 ways as a sum of consecutive naturals, for example, 151843 + ... + 152718.

It is an arithmetic number, because the mean of its divisors is an integer number (16903191).

Almost surely, 2^133397718 is an apocalyptic number.

133397718 is an abundant number, since it is smaller than the sum of its proper divisors (137053338).

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

133397718 is a wasteful number, since it uses less digits than its factorization.

133397718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304639.

The product of its digits is 95256, while the sum is 42.

The square root of 133397718 is about 11549.7929851578. The cubic root of 133397718 is about 510.9551726588.

The spelling of 133397718 in words is "one hundred thirty-three million, three hundred ninety-seven thousand, seven hundred eighteen".