43481138 has 8 divisors (see below), whose sum is σ = 69058332. Its totient is φ = 20461696.

The previous prime is 43481131. The next prime is 43481159. The reversal of 43481138 is 83118434.

43481138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42211009 + 1270129 = 6497^2 + 1127^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43481131) 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 in 3 ways as a sum of consecutive naturals, for example, 639395 + ... + 639462.

Almost surely, 2^43481138 is an apocalyptic number.

43481138 is a deficient number, since it is larger than the sum of its proper divisors (25577194).

43481138 is a wasteful number, since it uses less digits than its factorization.

43481138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278876.

The product of its digits is 9216, while the sum is 32.

The square root of 43481138 is about 6594.0228995659. The cubic root of 43481138 is about 351.6416430862.

The spelling of 43481138 in words is "forty-three million, four hundred eighty-one thousand, one hundred thirty-eight".