438165133 has 8 divisors (see below), whose sum is σ = 502181568. Its totient is φ = 374504064.

The previous prime is 438165131. The next prime is 438165139. The reversal of 438165133 is 331561834.

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

It is a cyclic number.

It is not a de Polignac number, because 438165133 - 2¹ = 438165131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438165131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86191 + ... + 91132.

It is an arithmetic number, because the mean of its divisors is an integer number (62772696).

Almost surely, 2^438165133 is an apocalyptic number.

It is an amenable number.

438165133 is a deficient number, since it is larger than the sum of its proper divisors (64016435).

438165133 is a wasteful number, since it uses less digits than its factorization.

438165133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177683.

The product of its digits is 25920, while the sum is 34.

The square root of 438165133 is about 20932.3943446515. The cubic root of 438165133 is about 759.5317597039.

The spelling of 438165133 in words is "four hundred thirty-eight million, one hundred sixty-five thousand, one hundred thirty-three".