438538513 has 8 divisors (see below), whose sum is σ = 501798080. Its totient is φ = 375431760.

The previous prime is 438538459. The next prime is 438538519. The reversal of 438538513 is 315835834.

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 438538513 - 2²¹ = 436441361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438538519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31983 + ... + 43588.

It is an arithmetic number, because the mean of its divisors is an integer number (62724760).

Almost surely, 2^438538513 is an apocalyptic number.

It is an amenable number.

438538513 is a deficient number, since it is larger than the sum of its proper divisors (63259567).

438538513 is an equidigital number, since it uses as much as digits as its factorization.

438538513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76407.

The product of its digits is 172800, while the sum is 40.

The square root of 438538513 is about 20941.3111576138. The cubic root of 438538513 is about 759.7474420505.

The spelling of 438538513 in words is "four hundred thirty-eight million, five hundred thirty-eight thousand, five hundred thirteen".