43933682018 has 4 divisors (see below), whose sum is σ = 65900523030. Its totient is φ = 21966841008.

The previous prime is 43933681997. The next prime is 43933682113. The reversal of 43933682018 is 81028633934.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36455410489 + 7478271529 = 190933^2 + 86477^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10983420503 + ... + 10983420506.

Almost surely, 2^43933682018 is an apocalyptic number.

43933682018 is a deficient number, since it is larger than the sum of its proper divisors (21966841012).

43933682018 is a wasteful number, since it uses less digits than its factorization.

43933682018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21966841011.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 43933682018 in words is "forty-three billion, nine hundred thirty-three million, six hundred eighty-two thousand, eighteen".