438188116 has 6 divisors (see below), whose sum is σ = 766829210. Its totient is φ = 219094056.

The previous prime is 438188083. The next prime is 438188119. The reversal of 438188116 is 611881834.

It can be written as a sum of positive squares in only one way, i.e., 435139600 + 3048516 = 20860^2 + 1746^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438188119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54773511 + ... + 54773518.

Almost surely, 2^438188116 is an apocalyptic number.

It is an amenable number.

438188116 is a deficient number, since it is larger than the sum of its proper divisors (328641094).

438188116 is a wasteful number, since it uses less digits than its factorization.

438188116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109547033 (or 109547031 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 438188116 is about 20932.9433190844. The cubic root of 438188116 is about 759.5450393345.

The spelling of 438188116 in words is "four hundred thirty-eight million, one hundred eighty-eight thousand, one hundred sixteen".