133438458 has 8 divisors (see below), whose sum is σ = 266876928. Its totient is φ = 44479484.

The previous prime is 133438451. The next prime is 133438469. The reversal of 133438458 is 854834331.

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

133438458 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133438451) 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, 11119866 + ... + 11119877.

It is an arithmetic number, because the mean of its divisors is an integer number (33359616).

Almost surely, 2^133438458 is an apocalyptic number.

133438458 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.

133438458 is a wasteful number, since it uses less digits than its factorization.

133438458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22239748.

The product of its digits is 138240, while the sum is 39.

The square root of 133438458 is about 11551.5565184957. The cubic root of 133438458 is about 511.0071830312.

The spelling of 133438458 in words is "one hundred thirty-three million, four hundred thirty-eight thousand, four hundred fifty-eight".