10438018 has 4 divisors (see below), whose sum is σ = 15657030. Its totient is φ = 5219008.

The previous prime is 10438013. The next prime is 10438061. The reversal of 10438018 is 81083401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81083401 = 7 ⋅11583343.

It can be written as a sum of positive squares in only one way, i.e., 7469289 + 2968729 = 2733^2 + 1723^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10437983 and 10438001.

It is not an unprimeable number, because it can be changed into a prime (10438013) 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 as a sum of consecutive naturals, namely, 2609503 + ... + 2609506.

Almost surely, 2^10438018 is an apocalyptic number.

10438018 is a deficient number, since it is larger than the sum of its proper divisors (5219012).

10438018 is an equidigital number, since it uses as much as digits as its factorization.

10438018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5219011.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 10438018 is about 3230.7921629223. The cubic root of 10438018 is about 218.5442312103.

The spelling of 10438018 in words is "ten million, four hundred thirty-eight thousand, eighteen".