438003714138 has 32 divisors (see below), whose sum is σ = 897683411520. Its totient is φ = 142391034240.

The previous prime is 438003714131. The next prime is 438003714143. The reversal of 438003714138 is 831417300834.

It is a self number, because there is not a number n which added to its sum of digits gives 438003714138.

It is not an unprimeable number, because it can be changed into a prime (438003714131) 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, 409581 + ... + 1021647.

It is an arithmetic number, because the mean of its divisors is an integer number (28052606610).

Almost surely, 2^438003714138 is an apocalyptic number.

438003714138 is an abundant number, since it is smaller than the sum of its proper divisors (459679697382).

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

438003714138 is a wasteful number, since it uses less digits than its factorization.

438003714138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615022.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 438003714138 in words is "four hundred thirty-eight billion, three million, seven hundred fourteen thousand, one hundred thirty-eight".