133158018 has 32 divisors (see below), whose sum is σ = 305510400. Its totient is φ = 37901520.

The previous prime is 133158001. The next prime is 133158019. The reversal of 133158018 is 810851331.

It is not an unprimeable number, because it can be changed into a prime (133158019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5533 + ... + 17231.

It is an arithmetic number, because the mean of its divisors is an integer number (9547200).

Almost surely, 2^133158018 is an apocalyptic number.

133158018 is an abundant number, since it is smaller than the sum of its proper divisors (172352382).

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

133158018 is a wasteful number, since it uses less digits than its factorization.

133158018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 133158018 is about 11539.4115101248. The cubic root of 133158018 is about 510.6489470643.

The spelling of 133158018 in words is "one hundred thirty-three million, one hundred fifty-eight thousand, eighteen".